Penetrator Rocket

Penetrator Rocket is an ammunition item used by the game’s rocket launcher-type weaponry. It is a high-value projectile rather than a general-purpose resource, and its main role is to provide explosive firepower for weapons that accept rocket ammo. Because it is tied to weapon ammunition slots, it should be saved for situations where heavy damage or crowd control is worth the cost.

It appears across a wide range of late-game and mid-to-late-game locations, often in out-of-the-way spots, reward rooms, or areas guarded by enemies. Notable spawns include Residence Sector, Security Sector, Hydroplant, Voussoir, Manufacturing West, Cascade Laboratories, Reactors, Fragments, and Shadowgate. Across these areas, the rocket is usually placed as a pickup rather than a crafting staple, so exploration is the main way to stock up.

Commonly reported spawn points include:

• Residence Sector: on the far side of the bridge where a Sniper is.
• Security Sector: in a large room with toxic spillage and destroyed robots, and three can be found in Storage Unit C.
• Hydroplant: in the first open area where Jonas is; on top of the large building where Crusaders are fighting a Composer; and inside Waterfall Apartments in the room where the Voidpack recipe is found.
• Voussoir: in the first section, before the elevator, underneath a set of stairs.
• Manufacturing West: in the mines, in an area with a parked truck and containers.
• Cascade Laboratories: on Level 2 in the hallway to the Office Sector opposite the GATE Security Cart, in the Wildlife Pens, and in the Control Center; on Level 3 in Maintenance Access near the entrance to Adjustment, where reaching the shelf top requires furniture, a Gaseous Nest, or a Jump Pad.
• Reactors: in the Mist Reactor area near a Warning Sign and a large group of exploding pests, near a Wet Floor Sign, and in an area with Hydroplant Zombies and a Corrupted Robot; in the Gale Reactor area in the lower split section, inside a large room with two Vending Machines and a kitchen; and in the Cloud Reactor area on top of a crate near the Jotun, and after the passage full of dead Order soldiers on a crate above a large pool of radioactive waste.
• Fragments: inside the “Sunshine” store and near a red cart with Industrial Stoves.
• Shadowgate: inside the hut near the three dancing Witches, in the fenced area near the sign written in Finnish, and past the first forcefields near some Cement Bags.

Since these pickups are scattered through dangerous zones, it is best to collect them while clearing nearby enemies rather than making a special trip solely for ammo. The item’s value is highest when paired with a weapon you intend to use sparingly against elite threats, bosses, or dense groups.