Alright on Stage 2 "m 015" I simply can't get through this room without taking multiple hits, since the hit boxes on everything are clearly larger then the sprites and the hearts are aimed at you, I always take at least 3 hits getting through here. Maybe I just suck though.
Stage 1 M 009, ok this is a bug or some kind of invisible invincibility power up here? I climbed up into the spike cage area from below, hit the spikes and it made a weird sound effect, after that the heart meter seemed to reset to no damage status, after that nothing seemed to hurt me, I would get hit and flash, but I could stand on top of spikes for 10 mins and not die, ended up just running through everything absorbing damage, continued on to stage 2, and the effect continued. Just ran through stage 2 absorbing everything, made it to stage 3, then spawned inside the skull column, and could not continue as I am le stuck.
Ok, did a hard reset, tried this again, and it didn't happen, so yeah must have triggered a bug somehow.
And if I play legit, or use the keyboard warp, I always spawn stuck in the column on stage 3