Zhège fùběn shuāguài diào zhuāngbèi de gàilǜ tǐng gāo de.
Mob drops in this dungeon have a pretty high gear-rate.
Tips
usage
刷 in gaming means 'to repeatedly do an activity for rewards'. Family of related verbs: 刷副本 (run dungeons), 刷BOSS (boss farm), 刷材料 (farm materials), 刷经验 (grind XP), 刷成就 (achievement hunt). 怪 = 怪物 (monster/mob).
register
Casual gaming slang. Universal across MMOs, ARPGs (e.g. 暗黑破坏神 Diablo), and gacha games. Non-gamers may not know it, but anyone playing online RPGs in Chinese will use 刷怪 daily.