Helldivers 2 Boss Guide: How to Beat Bile Titans and Factory Striders

Bile Titans and Factory Striders are the two biggest, meanest things in Helldivers 2, and on the higher difficulties they show up all the time. A Bile Titan is the giant acid-spewing bug that towers over everything. A Factory Strider is the four-legged Automaton walker that looks like it rolled out of a Star Wars movie. Both of them can delete a whole squad in a couple seconds if you let them walk at you unanswered.

The good news is neither one is really a "boss" in the old-school sense. There are no phases, no health bar you chip down over ten minutes. They're just big bags of health with a few soft spots that, if you hit them right, fold the whole thing in one or two shots. That's pretty much the entire secret. Figure out where the squishy part is, bring the right tool for it, and these fights get a lot less scary.

Weak Points on Bile Titans and How to Hit Them

The Bile Titan has 6,500 health, which sounds like a ton until you realize it's carrying a couple of soft spots that take almost all of that off in one go. There are basically two places worth aiming, and one of them is situational.

The head, your one-shot zone

The forehead is the spot that matters. With the right anti-tank weapon, a single shot to the head drops the whole Titan. The head has 1,500 health of its own and heavy armor, and a recent patch actually knocked its durability down from 100% to 95%, which is why weaker anti-tank guns suddenly started one-shotting it again. So your Spear, your Recoilless Rifle, your Quasar, even a plain throwaway EAT-17, any of those will kill it in one headshot.

The catch is the head moves around. The thing bobs, turns, rears back before it spits. Your cleanest window is the moment it stops to puke. It plants its feet and tilts up to spray bile from about 25 to 30 meters away, and that's when the face sits still. Line up the shot, fire, and it's gone.

The belly and bile sacs

Underneath the Titan is the soft green stuff. There are two bile sacs up top (750 health each) and a big underside that's only lightly armored, sitting at around 4,000 health. The sacs are unarmored, so pretty much anything hurts them. Pop both sacs and you've burned the Titan's ability to spit, which forces it to lean on its legs only.

Here's where people trip up, though. Breaking the sacs makes the Titan angrier. It stops spitting and starts stomping and chasing, and its walking stride can actually keep up with you when your stamina runs low. So unless you're running a weapon that specifically wants the belly exposed, popping sacs can make your life harder, not easier. The belly is great if you don't have real armor penetration, since it's basically the one place a normal gun does meaningful work. If you've got anti-tank rounds, just shoot the face instead.

Skip the legs and butt

There is a weak point on the rear, and the wiki does list it, but it's rough. The butt armor is 3,500 health of heavy plating and it barely transfers damage where it counts. Same deal with the legs. They look like targets and they're not. Going for them is a waste of ammo nine times out of ten. Go face or belly, nothing else.

Best Support Weapons for One-Shotting Heavies

This is where the whole fight changes. The right support weapon turns a five-minute nightmare into a one-trigger-pull errand. Here's the rundown, grouped by how cleanly they handle big targets.

The clean one-shotters

Four support weapons kill a Bile Titan with a single headshot. The FAF-14 Spear locks on for you, which is a lifesaver when the Titan won't sit still, but you pay for it with ammo since you only get four missiles total. The GR-8 Recoilless Rifle hits just as hard and carries more rounds, you just have to aim it yourself. The LAS-99 Quasar Cannon is the infinite-ammo version, it recharges between shots so you never reload, but each shot has a charge-up windup that can cost you a moving target. And the EAT-17 Expendable Anti-Tank is the budget pick, a throwaway launcher you call in over and over, and it still one-shots a Titan to the face.

So who actually wants which? Most squads lean Spear if they've got someone running backpack ammo, or Quasar for the never-reload freedom. EAT is the safety net you slap on when nobody planned for heavies.

The two-shotters

If you only brought these, plan on firing twice. The MLS-4X Commando fires four rockets in quick succession and needs two of them to the head. The E/AT-12 Anti-Tank Emplacement is the static version you deploy into the ground, same deal, two shots. Both are fine, they just take a second hit to confirm the kill.

The three-shotters and grinders

The RS-422 Railgun on its Unsafe setting takes three fully-charged headshots. It's a medium-pen monster for everything else in the game, so plenty of players carry one anyway and just eat the extra shots on a Titan.

For the Factory Strider specifically, you also want a gun that does medium-penetration work, because the Strider has two chin turrets you need to peel off (more on that next). The AC-8 Autocannon is the crowd favorite here. It chews through the Strider's gatling guns, mops up all the smaller bots, and never feels wasted in a loadout slot. The LAS-98 Laser Cannon and the APW-1 Anti-Materiel Rifle do the same turret-stripping job in slightly different ways. Your call which one fits the rest of your build.

The hidden one-shot, your sidearm

Don't sleep on the GP-20 Ultimatum. It's a secondary, but it hits like an anti-tank weapon and it'll one-shot a Bile Titan to the head if you connect. Lots of players keep their main slot for crowd control and pull the Ultimatum out the second a Titan pokes its face up. That trade is fine, you give up a primary round for a pocket delete button.

The short version is, bring something that says anti-tank, learn where the head is, and the rest is mostly preference.

Factory Strider Cannon and Leg Weak Spots

The Factory Strider is a 10,000-health nightmare with weapons bolted all over it, and you cannot just shoot it anywhere and hope. You deal with it in layers, top to bottom.

Take out the two chin gatlings first

On the front of the Strider's head sit two Fusion Gatling Guns. They spin at 1,200 RPM and they will shred you to paste if you stand in front of the thing. Each one only has 300 health and medium armor, which means your medium-pen guns handle them easily. An Autocannon, a Laser Cannon, or an Anti-Materiel Rifle pops both turrets in a couple seconds of fire.

This is step one, always. Once those two chin guns are gone, the front of the Strider gets way safer to approach, and the only thing you really have to dodge is the big top cannon.

The top cannon turret

Up on the Strider's back is the main gun, the Fusion Repeater Cannon. This is the one that fires bursts of three explosive shells, rotates a full 360 degrees, and almost always shoots first. It does 1,500 impact damage plus 1,500 durable damage per shell, which is enough to vaporize you through most armor. It has 900 health but it's wrapped in the toughest plating in the game (Tank I), so you need a real anti-tank weapon to hurt it. Spear or Recoilless, basically.

Here's a fun detail. Orbital strikes that auto-target the center of an enemy, like the Orbital Railcannon Strike or the Eagle 110mm Rocket Pods, tend to blow this cannon off before anything else. So sometimes you don't even have to aim for it. Blowing the cannon off doesn't kill the Strider, but it removes the scariest single weapon the thing has, which makes the rest of the fight survivable.

The head, and the eye behind it

This is where the actual kill happens. The front of the head is covered by a slab of head armor (1,500 health, Tank I). One shot from an EAT, Recoilless, or Quasar cracks that armor off, or two shots from a Commando or the E/AT-12. Behind it sits the head body, 2,500 health with heavy armor, and the "eye" in the middle is the fatal weak zone.

So the real Strider kill loop is, strip the chin guns with your medium gun, crack the head armor with one anti-tank shot, then pour heavy-pen fire into the eye. One Recoilless round to the exposed head usually ends it. Quasar or EAT take two. The eye hitbox is small and finicky, which is exactly why you clear the gatlings first, you need the breathing room to aim.

There's also a soft spot on the undercarriage, two belly panels at 1,200 health each (about 2,400 effective). Medium pen handles them. The problem is you have to stand underneath or right next to the walker to hit them, which is a great way to get stepped on or shot by freshly deployed Devastators. Reach for it only if the head shot isn't an option.

Legs and feet

People ask about the legs a lot. You can break them, and it limits how the Strider moves, but it does not kill the thing directly. The leg armor and knee plates are Tank I, and underneath is a heavy leg assembly with 1,500 health and a 2,000-point constitution pool that behaves like extra health. That's a lot of shooting for a result that just makes the walker easier to flank.

The feet are the better lower-body target. Each foot is about 3,500 effective health, and two shots from a Recoilless, EAT, or Quasar will blow one off, three from the E/AT-12. Blowing legs and feet off staggers the Strider and slows it down, which is genuinely useful if it's marching toward an objective you need to defend. Anti-tank mines work too, especially on the convoy version where Striders walk a fixed path. Just know that on its own, leg work won't put the machine down. You'll still have to crack that head.

Positioning and Kiting Tips During Heavy Spawns

Killing the big thing is only half the job. The other half is not dying while three more heavies spawn behind you. How you stand and how you move matters more than your aim does once the spawns get thick.

Never stop moving

A Bile Titan that you keep running from is a Titan that can't really hurt you. The thing is huge and slow to turn, and its bile has a ten-second cooldown between sprays. Keep moving and strafe wide, and it basically flails. The minute you stop, you eat a stomp. So your default against a Titan is constant lateral movement, pausing only for the split second you need to line up a headshot.

Factory Striders are a different animal. You don't really kite a Strider, it walks in a straight line and its guns track you. Against a Strider you break line of sight with terrain, not with speed.

Use terrain to break the Strider's guns

The Strider's top cannon can rotate 360 degrees, but the chin gatlings are tied to the head, which has a limited turn radius. That means rocks, buildings, and hills are your friends. Peek out, strip a chin gun, duck back behind cover. Don't stand in the open in front of a Strider, full stop. If you're taking cannon fire and your stim isn't keeping up, you're too exposed. Find something solid and get behind it.

Run counterclockwise around a Titan

Here's a weird-but-true one. If you run counterclockwise around a Bile Titan at close range, it triggers its stomping animation, which freezes it in place for a moment. That's your window to drop a stratagem beacon right under it and dive clear. Clockwise doesn't work the same way, the stomp only seems to come out when you circle that one direction. It sounds fiddly, but it's the single best trick for pinning a Titan down so a 500kg bomb can actually land on it.

Don't hold your ground

On the high difficulties, a heavy spawn almost never comes alone. A Titan drops, and two Chargers and a swarm of hunters roll in right behind it. Try to tank all of that on one spot and you die, full stop. Fall back. Drag the mess toward teammates who have the right tools loaded. A squad that rotates around each other, so the heavies get funneled toward whoever has ammo ready, survives way longer than four people who each try to solo their own monster.

Watch the acid, not just the legs

A lot of deaths come from the Titan's acid pool on the ground, not the impact itself. The spit leaves acid that now slows you by 30% (it used to be 50%) for about four seconds, and while you're crawling through it the Titan catches up. If you get tagged by bile, change direction fast and don't sprint in a straight line straight through the puddle. You can still sprint through acid now, which is a small mercy, but the slow is enough to get you cornered if you're not paying attention.

Stratagems That Trivialize Boss Encounters

You don't have to kill these things with guns. Half the time the cleanest answer is to throw a beacon at your feet and let the fleet handle it. These are the stratagems that turn a fight sideways.

Orbital Railcannon Strike, the guaranteed Titan kill

This is the single best panic button in the game against a Bile Titan. The Railcannon locks onto a target and, if it grabs the Titan, that Titan dies. Full stop. The downside is the cooldown, it's a long one, so you can't spam it. Save it for the moment a Titan appears and your support weapon is on reload, or stash it for the second Titan when two show up at once.

Eagle 500kg Bomb

The 500kg is the workhorse. If a Bile Titan is caught in the center of the blast, it almost always dies. The tricky part is the delay, the bomb takes a couple seconds to land, and a Titan that's walking will wander straight out of the radius. That's exactly why the counterclockwise stomp trick from the last section matters, you pin the Titan still, drop the beacon under it, and the bomb catches it square. Against a Factory Strider the 500kg won't one-shot it, but it rips a huge chunk of health off and softens the armor for your guns to finish.

Eagle Airstrike plus 500kg, the combo

Lots of high-level players run both. You get up to five Eagle uses inside one cooldown window, and together they shred Factory Striders and clean up everything milling around them. Airstrike by itself does steady damage to a Strider, and paired with the 500kg you're looking at a walker that's limping and half-stripped by the time your squad opens fire. Pretty much the best two-slot stratagem duo in the game for heavies.

Orbital Precision Strike

The OPS is the precision tool. It only kills a Bile Titan if it's a direct hit to the head or the rear armor, so you have to aim the beacon well, but when it connects, the Titan is gone. Against a Factory Strider it's one of the best single-damage stratagems in the game if you land it on the body. The aiming is the whole skill, so it leans more toward a "git gud" option than a fire-and-forget one. Get good at the beacon placement and it pays off constantly.

Orbital Laser

The Laser is the reliable, no-think option. Lock it onto a Bile Titan and it kills the thing in about 9 seconds as long as the beam stays on target. It doesn't hit as hard as the OPS or the 500kg, but it basically can't miss and it lasts long enough to chew through a Strider too. Great for the moments you're too busy running to aim anything else.

Eagle 110mm Rocket Pods

The 110s have a neat trick against Bile Titans. Even when they don't outright kill it, the rockets tend to shatter the Titan's armor, and then it slowly bleeds out from underneath, which lets any weapon finish off the flesh. Against a Factory Strider the 110s auto-target the center mass, which usually means they blow the top cannon right off for you. Not a headline pick, but a sneaky-good secondary answer.

The desperate stuff, Hellbombs and reinforcement pods

If everything's on cooldown, a NUX-223 Hellbomb or the newer B-100 Portable Hellbomb will erase either a Titan or a Strider from medium range, you just have to survive long enough to set it off. And here's a fun last resort, reinforcement Hellpods do real damage when they land on a big enemy. Players will sometimes throw a reinforcement beacon straight onto a Titan so the incoming pod crushes it. It costs you a life, but in a wipe scenario that trade keeps the whole mission alive.

So when a Bile Titan or a Factory Strider rolls up, the instinct is to panic-fire. Don't. Drop a Railcannon or a 500kg on it, strip the chin guns if it's a Strider, put one anti-tank round where the soft part is, and let your squad clean up whatever the fleet left behind. The fleet does most of the heavy lifting for free.