Combat Engineers: Instead of calling for a normal reinforcement squad they call for other nearby engineers to build a box around Cogmind so that they're just stuck in a 1x1 space.
Combat ARCs: They ram you before deploying, just to add insult to injury
Zombies Mode: All bots are hostile and will attack you with whatever they have: Even Serfs will try to ram into you, and Excavators are suddenly kind of terrifying
Combat Mechanic: A 2x2 Mechanic with a stasis projector who immobilises you, then just comes up and takes all your parts off, like you can make normal mechanics do with RIF
Combat Sentry: ...Wait that's just a Heavy, isn't it
Combat Heavy: ...Wait, that's just a Behemoth, isn't it
Combat Behemoth: ...Wait, that's just a normal Behemoth
Deploy-A-Sentry 2.0: an 8-slot Drone Bay that, when used, just deploys an entire Y-64 Sentinel next to you. It's not friendly.
Combat Minesweepers: they place collected traps around you in inconvenient locations
Combat Garrisons: Oh god they have legs now run