>>528078228
Your mission is to board an automaton nanite ship and destroy its central core to disable it. The mission is a series of tight corridors, and you're able to call in hellpods, but the hole made by the pods gets closed up by the fast-repairing nanites (which explains why it can't be destroyed via normal weapons).
You fight the same sorts of enemies but in an extremely challenging close quarters environment with gun turrets, traps, etc to the control room, do some typing at the console, and get out before the ship explodes.