Well... I wish the restart button actually restarts from the current level rather than starting over.
Fast tower's projectiles actually slightly pass by the enemy which don't hit anything. Bomb tower doesn't seem to do enough damage to clear waves. Laser tower has enough power but it doesn't have enough range for the 2nd stage.
Also those Bakebake cheat with shortcuts. I guess it's intentional but it should be somewhat clearer that they do take shortcuts.
Music is great and those bakebake sprites are pretty cute.