One of the deadliest new enemies in this game. Reason being: They're smart. They'll hide behind objects and try to lure you into open areas where they'll bash you to pieces. If they can't lure you out, they'll take the occasional peek at you from behind their objects, wait until your guard is down, then make a mad dash at you with their arms protectively tucked behind their bodies. Their main attack is bashing you with their hard skulls.
Tactic would be to keep your back against a wall and let them charge. Use stasis on them and take out their legs. Careful, they can still crawl towards you. These have quite a bit of patience, so it could take some time to kill them all, as they travel in packs.
Added by: Forgoten_Scars Feb 26th 2011, ID#7042