Post game boss + Storyline end boss with both switches activated.
level 197
almost everything upgraded
almost best mods on equips
(dual 100% atk darkness sword too rare -.- )
++UPGRADES++
Play through the game normaly to get access to xeyon castle as well as the option to upgrade your gear to +18.
++Training Grounds++
Training grounds is good to get the ball rolling for leveling up, but eventual you will reach a point where the exp gains are only 1 exp per kill.
++Leveling up quickly++
play through the game without grinding, unlock xeyon and go tackle the bosses. The lower lvl you are, the more exp you will gain. It takes a long time to get from 199 to 200, you can get level 80- 190 ...