This is a hack I've been working on for 6 years that finally reached its completion status. It's not made for beginners and requires knowledge of a lot of intricate glitches, so I recommend you keep a backup savestate at all times. Draws inspiration from hacks such as the Mario Must Die series and Cool or Cruel. It's the first hack composed of multiple levels I've ever finished.
This is a beautiful hack. There are a lot of unique setups - I particularly liked the various goal traps you came up with - and a few glitches that are rarely seen in hacks (The blue koopa in level 152 was a genius idea).
The hack contains a few breaks (it's possible to fly under level 2A, for example) but they don't hinder the level design at all.
My only (subjective) complaint is about the level length - I would have preferred more, but shorter levels (Especially Triathlon was too long for me). Still 5/5, amazing hack.