I found guides on Steam but Is very tedious and you need to understand the game mechanic and stick to a build
You grind in the first 2 rooms in floor 1 until u cannot level up more but at the same time you are against the clock so the recommendation is that u will lose the first 2 runs (As in you lose cause you lost control of the prison but don't get fuck) I keep getting cocky and think I am strong enough but floor 2 always rekt me
Another thing if that u need to make sure to not get Masochist, you do that by lowering your cockiness, ergo u need to run away from enemies from time to time. If u think u can win an encounter but got bad luck with your abilities, close the game and try again u will start the fight again (Game auto saves so is very easy to fuck up a run) Hope this helps