Bros... I've played through the entire game four times and I still can't find my last missing health pickup

I'm at 99%. All gems, all HuCards. I believe I'm missing a single health pick-up, and I have no idea where it is. If I've combed every level and found every gem and HuCard, but I missed a single health pick-up, it must be hidden somewhere totally whack.

Any ideas?

how in the fuck do you get 100% save file in this game

I got every single crystal in every stage and collected every single HuToken and I'm still only at 99% damn you william wombat