grinding is ok...but this game makes from "grinding" a farce. it ruins a nice game completely, if you don't pay and no intelligent person should pay for such a bullshit!
the trick is not to run around, the trick is to jump twice, move a lil bit beside and repeat until the door opens. do this everywhere you can and you never have to run in circles or whatever. only once or twice you have to jump, jump and while you jump move beside, so that you can on the way back move under it...simple and very efficient
very very unbalanced difficulty sometimes. tournament 1. kill 5 npc enemys lvl 2X. hm ok, i have some lvl 50-60, no problem... tournament after that: nr 2: kill ten player...hm k, let's have a look. hm, my monsters have a value about 15k and i'm lvl 48, what are the enemys. ALL above lvl 55-60 with values from 30k-80k WTF ARE YOU DOING? such bullshit ruins this game which is already a bit ruined by the pay this and pay here and pay for everything!
absolute horrible difficulty on some lvl. the 30th is crap and then with 57 the difficulty rises so enourmously, that the whole game is completly ruined 1/5 is too much for it