Ok, i have beaten the game but i couldn't complete the level 20 to 100%, that thing is just impossible. Save your tickets and open them up whenever you have completed the old ones with 100%, so you only get items from level 20.
You must beat the first 4 guys, then 2 more to get the key and open the door, and another 4 guys (when i did this, i was left with only one guy). After that you just have to go right and up to a weird room that was a window (be careful of traps). After going through the window you meet the last boss, you just die and go in again with your full party (it's easy)
I did with with 4 rangers, Depot Boy + Chest is pretty powerful
Please uncap the autoclicker, at least make it a way bigger number. If you want increase its price but the game is ridiculously slow at now, and that would fix it pretty easy
ok, I pin it.