sans.

This has a funky vibe alright. Haven't played Undertale, but I am getting some Earthbound vibes here. At 0:53 onward it starts to unravel a bit imo. There's another layer of the repeating rhythm that doesn't really add much and sounds a bit annoying =l

Personally, I think it's better as a loop point from start to 0:53. Not sure if the rest is really an addition...least to me.

Caveat: the unique drum ideas work pretty well. You could probably rinse and repeat and just use those additional drum patterns to spice things up. *shrug*

Maybe other people will have more insight or better opinions.