my guess is that you have to be in sync with it, like running right in front of it at max speed, then when jumping, slow down a bit, but then you may hit the blocks at the top with your head. Another idea would be to jump on the first block the shell hits then quickly jump on the shell, then on the serie of block where's the Koopa, but good luck doing that

Otherwise maybe there's a hidden block somewhere in the hole... I guess I could always cheat by checking lunar magic *hides*

This is why I wonder if it's even possible to do without tools . I swear if someone tried to TAS this level, he would have to spend at least weeks on his run and it would involve hundreds of re-recordings

tool-assisted speedrun

yeah true I easily get lost with them we hear new ones every day

4chan makes it much worse

wait who did? :O

Oh, I never did get past the first shell, either you might have misread my post or I totally failed at typing it

Dang, I was hoping I was right But good to know
Ya, timing in 2D games is so hard sometimes.