I liked it.
If you select 1-player mode in options the button doesn't turn into a "2-player mode" button, but that's just a minor glitch. The turbine of death map is impossibly hard - it's difficult to just get out of the boxes in the sides of the 'turbine'. And the AI is "over enthusiastic", but it's kind of interesting to do sort of a bull-fighting lure and watch it smash into the wall.
Graphics could use a little work, but the atmospheric background music is pretty nice. The 'terminator' is cool. Maybe make the AI a bit more like that so it doesn't just attack at maximum speed all of the time. I like your levels, other than the turbine. Basically just work on graphics and AI. Maybe add multiple AI modes and a cooler menu - perhaps moving the buttons in patterns around the central axis? This is good, for the most part.