Well, I tested this thing yesterday. The landscape looked really good and refreshing, but reminded me more of a dry desert than mars. The spikes and cliffs added nice detail to the landscape, and it was fun to climb them. However, I noticed one (big) bug too:
-The AI enemies do not die when you kill them, nor fall to the ground, their animation just suddenly stops and they stand still looking dumb-founded.
Anyways, exellent demo. Looking forward for the game!
"ALL HAIL HITLER!"
Check out my game: http://forum.thegamecreators.com/?m=forum_view&t=74285&b=25