Cool game!
The graphics are good, specially the backgrounds, they remind me of megaman x games on the ps1. The music is also great (is it original?), although it did get a really repetitive after I got lost exploring, so more tracks would be a nice addition. I really liked the variety in weapons and enemies.
The only thing I felt lacking were the controls. I mean, even without the weird control scheme, they don't feel very responsive. It feels like there is a small delay before pressing a button and the corresponding action actually happening.