First of the level and graphics look fantastic! I really enjoyed the game, the controls felt nice, thought I would have loved to play this as a twin stick shooter (No gamepad right now so not sure if that's possible?) I have to say the dash for healing is AWESOME! I would like to know when I can dash though, a cool down timer, or some indication it's ready to dash.
I managed to get to Wave 5, one thing I didn't like and would change is each wave increase it resets my ghost, which caught me out a few times as I'd be in a corner, then suddenly back to where I started, with little indication of why, I thought it was a bug until I realised it was wave increase, this is my only neg, the rest I really enjoyed and wanna try get further than Wave 5