I think this game has some good ideas and is overall fun. What bothers me is just how uneven the difficulty level is between maps with a generator and maps without one, and I think it's mostly due to an unrealized idea - that the walking half should be the focus of enemies. I feel like in most cases he is, with the skulls and lasers targeting him, however, bats don't. So you have a case where the bats just beeline right for the guy with the gun who's hard to maneuver while also trying to get him on the generator, once the invincible bats are in the switch's area, it's hard to take it down. Additionally, I feel this game could've used more in the way of color contrast. It's a bit hard to see the snakes specifically as they're so dark against a dark background and move very fast with a short profile. Having them assume the more classic "snail crawl" position of video game snakes and be a brighter green would've done a lot for that.
Overall, creative idea and mostly good execution. Would've loved to see more of a use of Flixel's FX tools of course but not bad at all. Well done!