My first play through of the game was a 100% Hard mode, since the chapter select screen so easily allowed me to see where I had and hadn't forgotten mudokons. I only had trouble finding secrets in the Scrabanian Temple (yes it was THAT secret) and zulag 4 just before the boardroom.
The only bugs I had were that occasionally if I'd quick save on the edge of a ledge then with frequent reloading I'd fall through the floor and die. And I crashed while taking the bird portal at the end/start of revisited zulag 1.
But it's a really solid game so far, I loved Alf's Escape and didn't and it wasn't that hard, but definitely worked with the mechanics and took full advantage of Abe's abilities.
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