So creative and fun! But once again I disagree in your difficult levels,
The pink triangles were BY FAR the hardest enemies! You should have switched the orange squares with them, as in the last few levels being about the new hard enemy (that is the triangles, the orange squares were just moderately hard).
Either that or nerf the triangles! A projectile that stays in screen that long in a dogding game can be so evil, so shorten the duration in which the pink arrows dissapear (or just make so that when they follow you they don't leave behind a trail that blocks your path) OR respect how evil they are and put them in the last levels.
Well, just wanted to share that...