There are crucial items required to enhance equipment which are not farmable, like strength extension tickets or protects, building new throwaway alt characters is not called farming, it's called breaking the mmo rules (and for the worst, sadly). Everything in this game is RNG even ranking depends on it at some points, since mobs must not commit specific patterns in order to keep a good timing. To get optimized, you have two choices, be a whale, or waste thousands of hours (at this point of the game it might not be enough). If you enjoy farming to be rewarded, Soul Worker is definitely not for you. *This concerns the GameForge version of the Game.
Everything in this game is RNG even ranking depends on it at some points, Cute but.