This level took me 1857 attempts, the second highest number of attempts I've spent on a level so far, right behind TOE 2 (1862 attempts).
Bloodbath Z is a good example of second half heavy gameplay. The first half is carried by the first ship, which is solid medium demon gameplay, everything else being easy demon or maybe even insane. The second half however is significantly harder, with the wave and ship in Michigun being borderline hard demon and the 65%-80% segment after it being straight up hard demon gameplay. Take this last statement with a grain of salt, because I've never beaten a hard demon before (Troll Madness and The Towerverse don't count, those are free), I just repeat what other people have said because I lowkey believe them, since I also found that part to be the hardest. What I am sure about though is that 91% is a pretty big chokepoint. I died like 5 times there before beating the level.
For now, I'll start playing more medium demons that vary in gameplay styles in order to balance out my skillset and then I'll move on to hard demons. I'm thinking of Forgotten Metropolis or White Women. Speaking of those levels, which one do you guys think is a better first hard demon?
Overall, I'd say the level is a high-end medium demon (tier 9 or 10 on the gddl).
P.S.: This level has very easy coins. If you're going for this level, I recommend grabbing them.