A huge improvement compared to the first demo in performance and more detailed graphics but checkpoints and insta-saves/insta-loads are needed . I also liked the music of the first demo more this latest version seems altered maybe it can be put back into later levels , it's still fine though . It would also be better for the levels to have more ambience such as maybe toxic liquid dripping from pipes or when you look up you can see clouds very slowly going over you things like that . The gore effects need to be better like more blood splurting to give more of a retro quake vibe . Also a grenade launcher would be nice , possibly launching proximity electric grenades as secondary to stun enemies within its radius so you can finish them with a more powerful weapon when you can not get a shot with a normal grenade or they are moving to fast or have a third ammo type that would be proximity mines .