I like this game. The tactics is actually deep, kiting big groups of enemies, timing when to pick powerups, noting positions of powerups for planned attacks later... There is a lot to it. My biggest concern is the camera placement. Main tool seems so be kiting the enemies, letting them close then exploding them. That way enemies are mostly behind the player, and camera seems to be too close so that you can't see the eneimes, and they can close the distance and kill you before you notice and react. Aside from that, after some practice I started to go backwards to control the crowd and achieved 80k+ score, and I enjoyed the experience.
The graphics is cool, nice combination of low-res and low-poly, creates a solid look of retro-pc, I like that. Level design is good, a lot of places to gain advantage and risk-reward dead ends.
Congrats on making a cool entry!