Already there, just need to search...
You literally just tanked everything because you're level 20...import a save, got it
[bitter theorizing snipped]
Edit: jfc I did it.
dildo chair: No extra damage at 100% organ damage, but you can only orgasm for health if you press W
Wooden horse: just don't press anything, no extra damage at 100%
Milk: Bar fills up on orgasm which damages you, then slowly empties. Wait for it to empty then orgasm
Dick thing: Health goes down if bar is empty, just mash
Birth: you DO need to mash but there's a delay in the health regen and it's semi-random, so it's hard to tell
After you did that for 15 minutes (with a podcast in the backround, I hope), you get an incredibly tedious fight with disgusting interactive game over screens that take over 2 minutes to retry, and permanently takes your items each attempt
And after that you get a fight where the game over bugs out and forces you to restart the game and redo everything
you don't heal between those btw, and the other fight basically forces you to take half a bar of damage minimum
This is the worst designed section of any game I played bar-none. This took me fucking hours. It's not worth it. Either cheat to level 20 or grab a save. It's not fucking worth it.