Despite the huge slowdowns, this game is very fun to play. The upgrade and story progression doesn't feel too long to be boring and not too short to be too easy. A simple browser refresh fixes the slowdown. 4/5
Fun little game. My suggestion is change the mission mechanic. Right now you can finish the game without completing all missions. Make it so they should be awarded simultaneously if done. Still a fun game otherwise. 4/5
*sigh* I finished the final wave (again) for the last character unlock and it didn't register (again). It was really fun unlocking the new characters but this just kills the game for me.
Speed shrine is bugged. It seems to keep the movespeed/animation bonus throughout the levels but without the build speed bonus. Makes all levels relatively easy since travel time is almost instant with enough speed boost. Only fixable by refreshing the browser it seems.