How to Survive the Centipede Boss in Grounded 2's Rot and Ruin Update
Grounded 2's Rot and Ruin update adds the Woodpile area, returning Termites and the community-requested Centipede boss. Here is how to prepare.
Grounded 2 just got rotten in the best way. Obsidian Entertainment's Rot and Ruin update, officially version 0.6.0, landed on Xbox Series X|S, PS5, Steam and PC on October 20, and it is the co-op survival game's biggest content drop since the Into the Abyss update back in August. A new adventure zone, a returning enemy family with meaner attitudes, a long-requested boss fight and a combat buggy all arrive at once, and none of it is explained particularly gently in-game. Here is what new and returning backyard explorers need to know before dropping into the Woodpile.
The update's full patch notes run for pages, covering everything from a 51% smaller PC install (down from 37GB to 18GB thanks to an Unreal Engine 5.7 upgrade) to dozens of quest and buggy bug fixes. The headline additions, though, are the ones you will actually run into on your first trip back to Brookhollow Park.
Clearing the Woodpile's Termites
The Woodpile is Rot and Ruin's new adventure area, a maze of towering stacked timber and winding passages that Obsidian describes as "a familiar threat" wearing a new face. Termites are back in force, including Workers, Soldiers and the Termite King, alongside new O.G.R.R. variants that behave differently from the ones you fought in earlier updates. Expect new attacks and, per the official patch notes, "some particularly strange behavior" the deeper you push into their territory.
Treat your first Woodpile run as reconnaissance rather than a looting spree. The area's size and verticality make it easy to get swarmed by Soldiers while you're still learning its layout, and a fresh batch of Centipede-themed armor and furniture waits at the far end as a reward for clearing it properly rather than rushing through.
How to Beat the Centipede Boss
The update's other marquee fight is the Centipede, which Obsidian calls one of the most requested creatures in the community, now finally crawling into the Park. It is a many-legged, multi-phase encounter, and going in under-leveled is a fast way to get reset back to a Ranger Outpost. Bring fire or spicy damage if you have it, since the Centipede's segmented body punishes slow, single-target weapons, and keep an escape route in mind: its attack patterns are built to corner players against the Woodpile's timber walls.
Winning the fight is worth it beyond bragging rights. The Centipede drops a dedicated mutation, a new trinket, a Centipede Staff, a full Centipede armor set, and base decorations including a Cauldron, a Candle and an Apothecary station, plus a stuffed trophy and wall mount if you'd rather display your kill than wear it.
Riding the Potato Beetle Buggy
If the Ladybug Buggy was your scouting vehicle, the Potato Beetle is your tank. It's bigger, built for close-range combat, and mounts a shotgun-style turret that fires a spread of projectiles at anything foolish enough to get close. Facing a full horde instead of a single target, its charge projectile hits everything in a line with one shot, and its healing ability keeps your mount in the fight instead of retreating to the Beetle Nest to recover.
The Potato Beetle can also haul resources and feed materials straight into blueprints while you build, which makes it as useful for hauling loot out of the Woodpile as it is for fighting your way in. If you run it dry of ammunition mid-fight, the patch notes note you can "pulverize your enemies' corpses to fill up" rather than disengaging.
Upgrading Gear with Bismuth and the Yoking Press
Rot and Ruin's other major system change is gear tiering. Weapons and armor can now be pushed to higher Tiers using Bismuth, a new resource tied to the Raw Science energy found in the Abyss, refined and applied at a new building called the Yoking Press. It's the first time Grounded 2 has offered a dedicated upgrade path for favorite gear rather than forcing a swap to the next tier's recipe, so hang onto early Bismuth finds instead of spending them the moment you get them.
Builders also get a new customization tool, Painting. Craft paint, load up the Splotcher paintball gun, and recolor walls, floors, roofs, stairs and doors across your base. Combined with the update's new SCA.B color schemes and collectible figurines, it is the most expressive Grounded 2's base-building has been since launch. The full system list and every bug fix are detailed on the official Grounded 2 site and in the patch notes linked above.
What to Bring Before You Go In
Rot and Ruin doesn't gate the Woodpile behind a quest you have to grind through first, which means it's easy to wander in long before you're ready. Obsidian's own patch notes list Woodpile-specific weaknesses and resistances changes alongside the new area, a sign that the studio expects players to already have a solid mid-game loadout rather than starting gear. If you're returning after a break, spend an hour restocking healing items and topping off your Omni-Tool before you commit to a full Woodpile clear, since there's no fast travel point inside the area itself until you've found and activated one.
Co-op groups should also agree on a role split before engaging the Centipede. Its corner-heavy attack patterns punish players who stand shoulder to shoulder, so designate at least one teammate to keep distance on the Potato Beetle Buggy's turret while others draw aggro on foot. The fight is tuned for a full squad, and Obsidian's difficulty options extend up to the game's "Woah!" setting for players who want the encounter to hit even harder.
Quick Tips for Your First Rot and Ruin Run
- Perfect Dodge now deals no damage and costs no stamina on a clean dodge, letting you counterattack immediately — practice the timing on regular Termites before trying it on the Centipede.
- Mutation loadouts can be swapped on the fly from the Hotpouch radial menu, so you can switch into fire or armor-piercing mutations right before a boss pull instead of pre-planning everything.
- The new O.G.R.R. variants in the Woodpile don't share weaknesses with the ones you've already fought, so scan them with PEEP.R before committing to a fight.
- If you're on PC, the Unreal Engine 5.7 upgrade cut install size roughly in half; a clean reinstall is worth doing if you're tight on drive space, since consoles only saved 200-300MB by comparison.
Grounded 2 remains in early access on Steam, Xbox Game Preview and PS5, with full 1.0 still targeted for 2027. Obsidian hasn't detailed the next content drop yet, but if Rot and Ruin's pace holds, Brookhollow Park won't stay quiet for long.
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Sam writes about small studios and the games they ship against the odds, and turns the hardest parts of them into guides that get to the point.
