This will help me keep track of what needs to be done and what has been done. Thank you!

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Um, so there's a little trouble i got in today. My power went off while playing this game, and after launching it again next time my whole progress wiped down to zero. Neither synchronizing with steam cloud nor checking game files did anything at all. I wonder if there's any way to backup my data? Also, i was near completing last achievement of boss rush easy mode and it's really frustrating that for me to face this kind of problem ...

During the silenced, the first attack where it throws the mask always me, the boss is very fast and what do those masks up the top mean? Any assistance will be nice Ive noticed he teleports behind you, and attacks mostly behind you GOT IT AFTER 96 ♥♥♥♥♥♥♥ TRIES...

Sorry if I'm missing something, I just can't figure out how to get his health down.