You should add diagonal projectiles
I can get to 100 easy just by going left and right

Neat! I just wish rather then the projectiles going faster, it introduced more mechanics or it progressed faster.

took me a minute to figure out holding M1 keeps you constantly moving, should be explained esp since it's implied that you only click to move with the double click to start.
decent game though

Its alright. Kinda weird that you click the way you don't want to move. It may help if you switch that around