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Kill Diablo on Nightmare difficulty in a cooperative game.
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| Type | Cooperative > Act IV | ||||
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| Points | 20 (cumulative) | ||||
| Requirements | |||||
| Level 30 | |||||
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The Prime Evil (Cooperative Nightmare) is a Cooperative Achievement for defeating Diablo on Nightmare difficulty in a cooperative game.
Achievement series[]
| Achievement | Points | Reward | Description | ||
|---|---|---|---|---|---|
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The Prime Evil (Cooperative) | 10 | – | Kill Diablo on Normal difficulty in a cooperative game. | |
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The Prime Evil (Cooperative Nightmare) | 20 (cumulative) | – | Kill Diablo on Nightmare difficulty in a cooperative game. | |
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The Prime Evil (Cooperative Hell) | 30 (cumulative) | – | Kill Diablo on Hell difficulty in a cooperative game. | |
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The Prime Evil (Cooperative Inferno) | 40 (cumulative) |   | Banner Sigil Eye of Anu |
Kill Diablo on Inferno difficulty in a cooperative game. |