Man I got decently far on my 5th run or so, but I couldn't cure the damn poison which made me run from every fight and I eventually got cornered by the heavy armor monster in the basement RIP. I didn't know where to go after the bunny orgy though.
There's two paths down iirc, if you have a bomb vial thing you can open the path from the top right of that area, leading to the tree (note that going this path unleashes the true version of the save bed enemy, won't mention the name as it's a bit too spoilery imo). Going down it will get you to the end, though there are a couple hidden walls you have to find in there to open the path. The "main" path would be down the mines, there are a few routes there, can't remember the details off the top of my head though. I think there's a well in the bunny orgy place that you can jump into that acts as a shortcut, though I might just be thinking of the one near the chimera thing.
Tip if you don't want to discover it yourself: If you enter the initial area after starting a new character, there's 2 paths, one straight up and one to the left. The left path leads VERY quickly to the area I think you're talking about. That area also has the save bed on the left side of the room. The save bed has a coinflip chance of making you fight a very hard enemy, though the save bed becomes perfectly safe if you can kill them. This can be used to make a good run to start new attempts off of, especially since the right rooms there have a coinflip for equipment, so if you can save safely then save-scum some good equipment before saving again you'll be pretty set to head out from there. Of course, this method feels a bit cheap.