This is a good challenge, not ridiculously hard (except perhaps the underwater spike jumps, if you’re bad at timing) and definitely not easy, or at least not as easy as the base game. Every stage has been made harder somehow, from removal of Energy Tanks (though I still ended up with four at the end) to vast stage design changes and increased amounts of enemies.

It seems like the author either didn’t want to or couldn’t change enemy AI, so the challenge is all in the stages, and not the bosses. Not even the weakness order or how much damage each weapon does to each boss has been changed. Even so, the stages are well designed, I think.

I had fun with this one, and I think anyone who can beat the base game will have a good time with this hack.