| Achievement | How to unlock
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| Build 10 Turrets | Build 10 turrets.
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| Build 100 Turrets | Build 100 turrets.
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| Build 1000 Turrets | Build 1000 turrets.
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| Campaign 2 Mission 1 | Complete mission 1 of the second mini-campaign.
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| Campaign 2 Mission 2 | Complete mission 2 of the second mini-campaign.
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| Campaign 2 Mission 3 | Complete mission 3 of the second mini-campaign.
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| Campaign 2 Mission 4 | Complete mission 4 of the second mini-campaign.
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| Campaign 2 Mission 5 | Complete mission 5 of the second mini-campaign.
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| Campaign Mission 1 | Complete campaign mission 1.
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| Campaign Mission 10 | Complete campaign mission 10.
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| Campaign Mission 11 | Complete campaign mission 11.
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| Campaign Mission 12 | Complete campaign mission 12.
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| Campaign Mission 13 | Complete campaign mission 13.
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| Campaign Mission 14 | Complete campaign mission 14.
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| Campaign Mission 15 | Complete campaign mission 15.
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| Campaign Mission 16 | Complete campaign mission 16.
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| Campaign Mission 17 | Complete campaign mission 17.
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| Campaign Mission 18 | Complete campaign mission 18.
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| Campaign Mission 19 | Complete campaign mission 19.
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| Campaign Mission 2 | Complete campaign mission 2.
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| Campaign Mission 20 | Complete campaign mission 20.
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| Campaign Mission 21 | Complete campaign mission 21.
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| Campaign Mission 22 | Complete campaign mission 22.
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| Campaign Mission 23 | Complete campaign mission 23.
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| Campaign Mission 24 | Complete campaign mission 24.
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| Campaign Mission 25 | Complete campaign mission 25.
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| Campaign Mission 26 | Complete campaign mission 26.
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| Campaign Mission 3 | Complete campaign mission 3.
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| Campaign Mission 4 | Complete campaign mission 4.
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| Campaign Mission 5 | Complete campaign mission 5.
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| Campaign Mission 6 | Complete campaign mission 6.
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| Campaign Mission 7 | Complete campaign mission 7.
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| Campaign Mission 8 | Complete campaign mission 8.
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| Campaign Mission 9 | Complete campaign mission 9.
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| Defender Defender | Complete level 6 (Alliance) without losing any Xenite defenders.
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| Fully Operational Mothership | Buy every upgrade in the armoury.
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| Kill 50 Aliens | Kill 50 enemies.
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| Kill 500 Aliens | Kill 500 enemies.
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| Kill 5000 Aliens | Kill 5000 enemies.
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| Kill 50000 Aliens | Kill 50000 enemies.
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| Kill 500000 Aliens | Kill 500000 enemies.
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| Laser Spammer | Complete level 10 (Titan) using only Laser Turrets.
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| Nexus Recruit | Reach Nexus rank 5.
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| Nexus Sergeant | Reach Nexus rank 10.
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| Path Defender | Complete level 2 (Fortification) using only path deployable weapons.
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| Psycho Campaigner | Finish the campaign on Psycho difficulty.
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| Sentinel Admiral | Fire 1000 Sentinel orbital weapons.
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| Sentinel Gunner | Fire 10 Sentinel orbital weapons.
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| Sentinel Marksman | Fire 100 Sentinel orbital weapons.
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| Stronghold General | Use 1000 Stronghold abilities.
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| Stronghold Rookie | Use 10 Stronghold abilities.
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| Stronghold Squaddie | Use 100 Stronghold abilities.
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| Turret Engineer | Fully upgrade a turret in the armoury.
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| War Machine | Reach maximum level with any Commander.
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