The dash was definitely the best skill..visually and game feel! Also very nice touch reducing the move speed on the stairs! Controls and player/enemy behaviour is very good.
Quick Suggestions:
- The most important thing is a tutorial at the begining with th epowers and cookies.
- The tooltip stayed on screen sometimes for the rest of the game after hovering over a cookie.
- Maybe a minimap for the dungeons if you plan to make them bigger.
Overall a very polished game with much of potenital! Well done!