i actually played though several waves without realizing how to pick up crabs or items. i learned about it after a gameover and reading the controls in the menu
i probably pressed up multiple times next to enemies but it seems to be very finnicky. like you have to be in the exact spot, and you don't pick them up while falling/jumping/punching , i would probably make it a bit more lenient so that people don't miss the entire mechanic
aside from this tiny nitpick, it's kino and funand lovely