The engine can do things i've never seen in other shooters.
I absolutely loved the hospital level and prison level. Totally awesome!!!!
For that alone you want to play rage!!!!!
The bank vault level was another incredible level and there's more to come. The enemies there were great! I loved the ones with the gas cannisters on them. They go up into the air and explode with a big bang, that really made me laugh out loud i loved it.
What i'm saying here is that it's absolutely a pitty that the game has some buggy issues because it really deserves credit for other aspects like level design, character motion, level of detail and randomness everywhere.