Unbalanced game. Pay to win. Only those who can afforrd to buy in shop will become more stronger. Only those strong players and clans can farm bosses and get their loots at 4th flr labyrinth or valleys when they respawn which can make you strong faster. Castle and valley holders has exponentially advantage in getting stronger than other players. Don't ever play if you are late on server or just F2P or you'll just get bullied.