Pearl Jam - Falling Down

https://www.youtube.com/watch?v=LnlAIlg8ufs - starts at 0:00:53

lancer

DUEL from ultrakill

Ohohoho. *cracks knuckles*

Clair de Lune from ULTRAKILL, The Portal 1 radio music, Long Elevator (with the Undertale elevator chime as an easter egg, if possible), Cool Mixtape from Deltarune, Airwaves from Deltarune, Highway to Hell if you don't already have it, and Going Up from Undertale Yellow. I'll post any others here if I think of any.

https://www.youtube.com/watch?v=GUPtSENNsdg
https://www.youtube.com/watch?v=cc_KpOufpgM

Yo wait Elevator Jam is a good one.

flashback (Excerpt) from deltarune chapter 3 real

Ok, but only if it's the in-game version, the ost version sounds too high-pitched

the helldivers 2 theme as you're literally diving to hell

The Correspondents - In the Meantime would fit quite well

Team Fortress 2 - Upgrade Station https://www.youtube.com/watch?v=Q7eJg7hRvqE

dumb ways to die :3

Foo Fighters - My Hero

-"You thinking what I'm thinking partner?"
-"Aim for the bushes?"