Bugs: I didn't come across any bugs when playing.
Strengths: The animation and controls are great and all feels smooth and natural.
Weaknesses: There isn't much of a goal at the moment with the game in this state all you can do is avoid the projectiles. The game environment feels very empty and simple, compared to the character sprite.
Changes: You could add a time limit or something so the player has to survive for that amount of time. You could also add different enemies perhaps that appear the longer the player survives for.