Dash Till Puff 2D is probably the hardest minigame harder level in the game, and I would rank it in the 10 hardest harder levels personally. Be prepared for a janky variety of gameplay here and generally an unpleasant experience.

0-6% is a basic ship part, gets very consistent with practice

6-11% is a basic ufo part, gets very consistent but the hitboxes can be misleading

11-16% is a “swing” part similar to wave wave by TheRealDarnoc where every tap instantly flips your gravity. It gets consistent but the unique gameplay can trip you up

16-21% is a spam “pogo stick” gameplay part where every tap slams your icon into the ground. This is the first hard part of the level imo, make sure you find a consistent path here or you will die a lot here

21-30% is a unique “wave” part where your icon automatically jumps back and forth between the ceiling and ground and you can hold to speed up its gravity. With a consistent path this part is easy. One of my favorite parts imo, this kind of gameplay is cool

30-37% is a standard upside down ship part. The only tricky thing here is there’s not good indication that the ship is upside down, you just have to memorize that, and I died to this transition a bunch of times

37-45% is the only 2P part of the level - one input brings you up, the other brings you down like a wave. This part is free, but just remember it’s 2P - toggle your controls so your dominant hand makes it go up here

45-54% is free, I’m not sure how the gameplay is supposed to work here but you can basically just slide along the ground and tap to jump like a cube

54-60% is yet another ship part. Not much to say here

60-67% is another “pogo stick” part where you spam to hit the ground. Probably the last major choke point of the level, practice this part a ton

67-73% is another “swing” wave part where you tap repeatedly to alternate gravity back and forth. I died here twice and it was very painful :(

73-80% is another upside down ship part - the only hard part here is remembering you’re upside down

80-85% is a ball part where you can tap midair to flip gravity, it’s very easy

85-90% is an easy ufo part but the hitboxes can be misleading so be prepared

90-96% is another custom wave gameplay part where you jump back and forth between the ceiling and ground and hold to speed up your gravity - it’s easy but make sure you have a consistent setup

96-100% is a part where you tap to teleport between 3 lanes to avoid passing obstacles (similar to the Muffet bossfight in Undertale)

Overall, no part of this level is that hard - the difficulty comes from remembering what game mode you’re in at every part as you are given very little time to react. I found this the most unpleasant 2.1 level on the hardest harder list, it was extremely unfun to play the whole time due to bad transitions

Visually, this level looks like a good recreation of Dash Till Puff. I’ve never played the original so I’m not a good judge though

I love that this level used the entirety of the song Unity by TheFatRat, you rarely hear the vocal parts of this song in rated levels