Not bad dude
In fact this could be a cool great game. The graphics were good, alltought too much gray (you should be able to distinguish the ladder from the main hall). The sound, well, the sound...to be honest, the high pitch of the terran ghost gave me a bit headache. Maybe you should try lowering the volume just a bit, specially if there is no music, which I think is a must-be. Big part of the entertainement, game-fun and atmosphere at StarCraft was thanks to it's music. The interactivity was ok, could be better, like picking up stuff and the sort, ya 'now what I mean? The game style is great. Violence...well, I'm not a big fan of gore 'n stuff, but I think some blood would add a good deal to atmosphere. This game doesen't really need humour, lol.
Alltought this is kind of a demo, it's quite good. If you could rack more stuff in there it would'a rock!
Tip: Know what would be cool? A zergling or something in the vents or whatever you climb in, reminds me of Alien...mmyes...