A great way to level up low mercs is to give money to new players and earn EXP for doing so. You can start doing this at level 30+ if you give a new player 10000 gold you'll earn like 2k EXP for each of your characters.
I hate how all the bloody quests are the same.
1- Kill 20 mobs
2- Get 5 items
3- Buy something from the market
4- Go to the dungeon and kill 30 mobs closest to the entrance.
5- Get 20 items from something else in the dungeon.
6- Kill the…