You did well on the part of speeding up the song, but a Nightcore remix has the pitch up by a certain amount

Five Nights at Freddy's 3 Song (Feat. EileMonty & Orko) - Die In A Fire (FNAF3)  - Living Tombstone

Nightcore by me :)

Nightcore - Die In A Fire [TIF Remix]

Nightcore - Took Me By Surprise (Maria Mena)

i love the legend of Zelda , undertale and fnaf :3