2) Most locations are very pretty (except for the floating islands in between locations. Very cold looking and boring, all the same looking, easy to get lost).
3) Very interesting designs of mobs. Well balanced, most are not exagarated (like in some games, they exagarate with all kind of details added in chaotic way). Good taste.
4) Good design of interface. Very easy to navigate (even though I cant read Korean haha).
5) Friendly upgrading system, very satysfying.
6) Id add some mysterious mobs, appearing under particular conditions in hidden spots, not necessary strong. But for people who love to collect, it would add a mystery and curiosity for hunting.
Thank you for your work!