Nice little game, the controls felt good and I really liked the artwork, particularly the dash effect! Background music was nice too.

The only thing that I felt was missing was a basic UI, I couldn't see how many slimes I had killed or how many lives I had left? I played the online version though so not sure if the downloadable one is different.

The idea of this game, having to deal with lots of very dumb enemies, is a good concept. However, this is undermined by the fact that you can't attack for a time after being hit. This makes the game much harder but also prevents the player from making the choice  of getting rid of a bunch of enemies by sacrificing their health.