Having beat the game on normal, here are my tips for the bosses:
Demihuman boss was annoying. I thankfully had saved most of my potions up to that point, and I definitely needed them. the left axe thrower can be hit by the magic sword attack mid-jump, which can also hit the left hand at the same time. the right thrower needs to be hit by arrows, but given the little time you're given to aim and the fact they respawn, I'd suggest ignoring it. The handslam attack can be dodged by jumping when he grunts, if you stand in the middle then sometimes the hands land next to each other and you can hit both with mage sword for extra damage. The swipe grab can be dodged by standing in the centre and ducking the first and third, jumping the second.
Northeast town priest is a required loss first time. First phase is easy, but try to save mana since you'll need a bit to get phase 2 started, just explode arrow when he shields, then arrow his head for bonus damage before he ports- its one dot up from a flat aim arc normally, if you're fast you can get 2 arrows in per shield break. dodge the retaliation worms by running left or right from the centre when the heads open up.
Phase 2 is a bit rough. You're gonna want to spam piercing arrow to cut down the horde of mobs spawns (regenerates mana with enough kills), and explosive arrow to kill the boss itself. Once you figure out how to kill the mobs, the worms it shoots once some secions are dead are the greatest threat, try to dodge or mage sword them or they'll do lots of damage. worth using a white potion to keep your defilement low, grabs deal most of the damage here.
If there's a proper way to kill the stomach beast I don't know it. Load up with potions before entering the dungeon and win the fight by standing back and spamming the crap out of explosive arrow into its face. it does less damage than a proper aimed arrow but is way faster. Use white potions when struggling gets hard- thats usually what kills you here. red and blue potions when low.
Final boss took a lot of tries. stock up on potions- you have to be very agressive to save the barrier. focus on jumps and mage sword to kill things, I found arrows too fiddly here. move left and right often to handle things as they spawn. You should have the powder now, so you can do the side boss near the demihuman lair for the best wand to cut down mana costs if you need the help. the bosses attack from above should be redirected to the left or right - it can hit and kill enemies if you're lucky.
Overall, it lived up to the hype i had for it. Dev has said there'll be DLC coming, so more content in a year or so? most of the content here was a homage to 1's stuff, so maybe we'll see a spider/insect lair there? personally I'm hoping for more eldritch stuff, the cathedral and northeast town content was great.
