you can give urself infinite money to buy the best gear and infinite healing items to make fights easier, after lvl 3 you dont really need to level anymore so just stand all, raise libido and escape, and after seeing the arena 3v8 battle that might be the intention because theres no way they expect you to defeat all of them, you can also alter your levels and stats like 1mill hp/mp, theres 2 bad endings for losing, one for the slimes and one in the last dungeon, for the slimes you have to get defeated so dont hack before getting that, last dungeon you just have to ignore the stones that lower your libido. Dont know if bad endings are saved if they are ill share a save later.
So heres a "guide" if you want to ignore as much combat and know how to edit saves(just use saveeditoronline) but want to see the story.
Make a save, go to slime forest unequip all and stand all until you wipe, bad ending 1.
Hack to change level to 50 or whatever high number you want, get 1mill gold, and change variable 54 to 100.
Get into combat but just do stand all until you get high libido then escape, then follow the guide from the creator to get all scenes.
In last dungeon ignore "relieve" stones for 2nd bad ending.