Tip: Switch palace switches normally disappear if you replay the level. However, if you insert them as direct Map16 and use the hex edit at $00EEB2 in the ROM map, you can replay the level without a problem.
Overall decent hack, lots of elements are reused in most of the levels (i.e. flying platforms) which made the levels feel more bland towards the end. The final boss is one of the most frustrating and tedious boss battles ever conceived and doesn't compare to the rest of the hack's difficulty. Also technically 11 exits with the final boss.
I had a lot of fun with this hack until the Titanic Monarch fortress. While the sections in it are cool, I'm just not a fan of having to redo so much every time I blindly run into the next obstacle. I eventually gave up after getting to the fourth room and dying immediately, and savestated to see what was after that. Glad I did, because the fifth room had a couple obstacles that would have taken me a while to get right even if I didn't have to beat four consecutive rooms every single attempt.
It was a kind of jarring experience because the checkpoint placement had been very good up until that point, and it was sad to end my experience with this hack on a sour note. I did have a few gripes with some of the obstacles (e.g. what was I actually supposed to do with the four fireballs in the second half of sediment valley?) but nothing outside the normal gripes I have with kaizo levels.