exp rate - "ok" skill rate - total retarded bs drop rate - absolute total retarded bs (u have a better chance pulling a gold coin outta ur ass)
If u wanna reach high level, you need to purchase prem + trigrams. People say xp rate is good, but it really suxs if you dont purchase prem. You need the trigrams to kill faster because you produce to low damage. I recommend you check the game after 3 months. Right now the current state is terrible until the developer takes action to resolve these exploits/bugs.
exp is ok skill rate is bad, you get your lf c11 around immortal Drop rate sucks that much that sometimes you finish dungeon with less money in your pockets than before you went in. Passes prices sometimes beat up droped items in value. Economy is a disaster also since you have huge items demand and no way to get it.