You have the right direction. What I liked about this is that the gameplay didn't feel very clunky and it always kept you moving no matter what. The bosses' move sets were fun and unique from each other, but I found that their AI wandered from targeting the player, leaving me free to charge my generators. When they did target me, that was when it became fun.
Audio and visuals are lacking and there are inconsistent collision physics across the board, but it was fun enough for me to want to finish it. I could see this being a wildly fun game if expanded upon.