Sadly, this game loses its challenge as a Mutant once you learn the Demonform skill. Demonform + Force + Steel/Bone Decapitator = 250+ damage per hit with decent strength.
For those complaining about no reset button / the green "pause" gem being too small, hit P. There's a "Retry Level" option in there.
As for the game, why does it seem like all of the gem levels I got an A on, yet every other level I got a B on regardless of how quickly I completed them? And why is there no ending screen?
I do NOT like how quickly stones and items disappear on the field. You pretty much have to grab them the moment they appear, which puts you in direct collision course of any other enemies that decide to spawn when you go to grab them, and if the screen isn't scrolling because of a large monster, everything behind them will disappear if you don't kill them fast enough.
What originally started out as a promising zombie game ended up turning into a "destroy the nearest car and hope for a chainsaw" game, then turned into a "huddle in a corner and shoot everything that moves" once you get the best gun.
Level 10 (max) O2 tanks gives you about 2 minutes 5 seconds (125 seconds) of oxygen, so this is nowhere near "+30 seconds of oxygen every level". If it was, there'd be about 325 seconds or so of oxygen. Either fix the text or fix the upgrade levels.
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