五、其他困難成就
請善用查詢功能(Ctrl+F)。
這些成就可能比較困難，需要花費額外的時間和精力。
These achievements can be difficult and require additional time and effort.
| 圖標 | 漢語 | 英語 | 額外說明 |
| 衆志成城 | WE ARE LEGION! |
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| 造出1500位援軍。 | Spawn 1,500 Reinforcements | ||
| 能力無限！ | UNLIMITED POWER! | 這是最難的成就！你可以在14關中的鋼鐵模式中殺綿羊來速刷此成就。 |
| 用維茲南的能力殺死5000個敵人。 | Kill 5,000 enemies with Vez'nan's powers. | This is the most difficult achievement! Go to Iron challenge on level 14. Get all upgrades for Soul Impact. And then kill the sheep.
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| 至尊守護者 | SUPREME DEFENDER | 只包括第1關至第16關。 |
| 在老兵難度下完成戰役 | Complete the chapaign in Vetern difficulty. | Only includes level 1 to level 16.
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| 無敵的守護者 | PEERLESS DEFENDER | 只包括第1關至第16關。高難度成就可以自動順便解鎖低難度成就。 |
| 在不可能難度下完成戰役 | Complete the campaign in impossible difficulty. | Only includes level 1 to level 16. High difficulty achievement can automatically unlock low difficulty achievement.
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