I’ve just finished the first level of the game and —oh boy— this is great! It feels like a mix of Quake and Doom with a great-looking PSX-style coating; the soundtrack is excellent too. And the dark maze at M2 reminded me of Doom's E1M4 *chef kiss*.
One question: does it have a button to run? Missed the armour vest at the very end of lvl1, because I can't run+jump (skill issue maybe?).
Edit: great upgrade from Ravager, which I also liked a lot!