Oh Prey was so good. Locked door? Imitate/morph into a coffee cup and slide through a slot in the glass. Shoot a foam dart through the same slot at the door release button. Fix the broken electrical box to make the outside door controls work again. Hack it open from a nearby security terminal. Use the gloo gun to make stairs up a wall into the ceiling and drop down into the room (gloo gun is awesome). The combat is fun too. Upgradable weapons and powers. You can morph into turrets and drones, turn corpses into monsters to fight for you, confuse enemies into being allies, set fire column traps, psychically explode heads, lightning/exploding balls. Gloo gun is fun in combat too to freeze enemies. There are definitely some issues, glitches too. I think the end game was a little backtrack heavy, but I loved exploring in the beginning. Great game, looking forward to the dlc. I think it's going to be more of a standalone game than dlc.