[PUMP IT UP XX] Shub Sothoth(슈브 소토스) S25 

This is probably off topic but I think prime 2 has the most unstable at rating the stepchart, at example cross time s15 is harder than baroque virus s17, somehow breakout d22 become d20, shub sothoth s25 is harder than paradoxx s26, and rhythm ta s7 is easier than xuxa s5. They all from prime 2 and thanks for XX to rerated it

I'd say vacuum cleaner since the ending cant be easily masheable like shub