Beat it with Ghost Sniper, when you finish the game click on invincible mode, if you didn't kill all bosses, and then level up to your last stage, if you lost it in battle with the final boss, Then walk around and kill all giant bubbles, you won't lose any bubbles because you're in invincible mode. 5/5
I think it's great. Really boggles my mind, but it needs some music. Feels much like a rubic's cube thing is I can solve it in less then 100 seconds, sometimes. 4/5