Halo 2 skulls

The IWHBYD skull is not possible without hacking the game. There is no reason why we have to do all that -Yoink- jumping or -Yoink- grenade jumping just for a skulls

It’s absolutely possible to get it legitimately—and quite easy with a bit of patience.
It just has certain criteria that need to be met along with a somewhat low chance of spawning.
With the right technique you can get to it in 1-2 minutes from the level start, and restart if it fails to spawn.
(See here and here)

Or put the skulls on ground and let you pick them up on any difficulty, instead of wasting time try to get the skulls by turning game in to some rubbish platformer.