Interessting Wave mechanik - firtst I thought its not getting harder but after 6000 points it was like OwO I actualy need to be carefull!
The Sound are nice, the Battle was ... first I was confused but got used to it - the Difficulty spikes a little after a while. The enemies .... well a litte difference in varriaty - like Color coded enemy sprites to know who attacks whom? - but over all a solid game :)
Well done!