Just some advice. Try to level up your multiplier to get more coins at first and extend time->run->jump->raygun->ammo. You need to max out jumping skills only. Level up Run/Jump and make sure you have about 8-12 ammo. When you're able to jump high go left right from the start and jump in that shortcut. Then, run across and fight the boss. You'll have at least 45 seconds to spare if you maxed out time. So honestly Time & Jump are the priority now. I hope i helped, good luck.
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