I have no idea where the two missing secrets were, but had I seen them, I would have collected them, please consider adding a map to this game demo which unfolds the more the player explores and tells them where the uncollected secrets are.
With that said I never want to play this game again in my life, my brain is fried, it's 04:57 AM and I am tired.
This was all done at base speed, no slowing. Also I got the one that required 4 keys.
