Hidden Quest 60

I asked if I could do it, but I tried it once. Surprisingly, I leveled up quickly. I didn't watch reward ads. Just kill the boss whenever its cooldown is up. For the diamonds? When you collect pink gems, buy the 10-weapon chest. Synthesize weapons, equip a higher-level one, and quickly complete quests, as they give a lot of experience. For hunting, just let it auto-play at a level-appropriate spot.