The overload was awesome, I think it's the best I saw from the entries. I had some issues with the start menu where I wanted to click on the menu but I needed to use the spacebar and the control wasn't displayed. So I was a bit confused.
It would've been cool to have more and more ennemies and maybe with lesser life pool.
Finally I liked the atmosphere and the postfx you used. The comics style hit effects were interesting too.