Yeah, takes alot of time to grind AND takes alot of time to get good gadgets, you even cant get a chance to kill mini boss due to high lvl players
Camping, for the kill, every level you get you need to buy/grind for the skill books before you can use that skill, and its not easy to get those books. Either you buy it in auction shop( which is really expensive) unless you have enough. Its a social online game, you need party to go grind faster and earning exp? Its hell not very easy at all, if you got alot of patience, then this is your game.