First, I like the effort you are putting into this game. I really enoy playing this game.
Stuff I found:
- items from chest disapearing when spawning in a wall / object
- Slime boss only killable via item that flashes the entire screen. (need around 30+ of those)
- Huge lag if you see beyond arena on the dungeon map
I like the idea of modifieres to increase the difficulty. I think right know they make it far easier. Luck is getting gamebreaking while both modifiers are active. By getting around 30 luck at 14 min the game turns into a "grab the next chest and get op fast" game.
With this method I managed to kill the end boss in 4sec, gathered arround 50k gold and reached lvl 112. I also killed the endboss in the dungeon in less than 10 sec with a new account (no upgrades)