Charget Yetti is unlocked as reward of a quests in Dark Quests.
Dark Quests costs 1.00e60 / 1 Nd.
Charged Adult Yetis reward cost 1.00e67 / 10 Uv.

引用自 zeysoft：

Charget Yetti is unlocked as reward of a quests in Dark Quests.
Dark Quests costs 1.00e60 / 1 Nd.
Charged Adult Yetis reward cost 1.00e67 / 10 Uv.

Great, thank you for your answer, but I would also like to ask for information on how to take on dark tasks.

引用自 76561199235409416：

引用自 zeysoft：

Charget Yetti is unlocked as reward of a quests in Dark Quests.
Dark Quests costs 1.00e60 / 1 Nd.
Charged Adult Yetis reward cost 1.00e67 / 10 Uv.

Great, thank you for your answer, but I would also like to ask for information on how to take on dark tasks.

Every time you unlock quests, one of those quests is to unlock more quests - keep doing that, and you'll eventually unlock the set of quests zeysoft is talking about. If you want to figure out exactly what you need to do, it's possible to trace backwards through information on the wiki. From experience, I will say that it took me a long time from getting Colo's quest to actually unlocking electric adult yetis.

引用自 zephyr_goldwing：

引用自 76561199235409416：

Great, thank you for your answer, but I would also like to ask for information on how to take on dark tasks.

Every time you unlock quests, one of those quests is to unlock more quests - keep doing that, and you'll eventually unlock the set of quests zeysoft is talking about. If you want to figure out exactly what you need to do, it's possible to trace backwards through information on the wiki. From experience, I will say that it took me a long time from getting Colo's quest to actually unlocking electric adult yetis.

Thank you