Just realised I didn't actually post my thoughts on the final boss fight.
So... I'd say it's one of the more fair ones, apart from the third phase. The whole mock-3D thing just doesn't work well here, it's hard to tell exactly when the 3D attacks (in this case the lightning bolts) are able to hit you, meaning you pretty much just have to avoid their area altogether. And is it just me, or is the baby's laser literally impossible to avoid or block, aside from by abusing caltrops for temp-invincibility? It also felt like flares were literally the only way to damage that phase - though IDK, maybe the axe can reach? I don't bother with the axe because the flail whip is stronger and faster. But aside from that phase, it was actually a really good final boss.
Now on the other hand, immediately after the fight... seriously, you're meant to just figure out that that hanging string is a ladder? I wasted 4 minutes the first time, looking for another way because I didn't spot that. I discovered that you're actually meant to go to Mulbrook completely by accident; after finding the normal way out blocked, I looked around, accidentally ended up in that room, and noticed the door wasn't blocked like all the others - had it not been for that this would certianly have been a "guide dang it!" moment for me; with my actual strategy being to try and find another way to the Surface, like Masoleum Of The Giants -> Graveyard Of The Giants -> Tower Of The Goddess -> Surface. I might try that after I complete Hell and see if that even works. ---
Proud to be part of the 1% of society that's smart enough to realise Australia is not real.