| Achievement | How to unlock
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- 2001, An Omelette Odyssey
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| - Kill three Ordovician Scorchers.
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| - Complete a mission with the backpack at full health.
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| - Unlock all grenade modifications in the S.T.O.R.E.
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| - Kill three Ordovician Harvesters.
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| - Survive ten alien ambushes.
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| - Win the fourth planetary campaign.
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| - Meet every developer NPC in the game at least once.
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| - Jump a hive with four jumpers using the same color.
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| - Kill one of every type of alien in the game.
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| - Win a hive mission in which a player killed no aliens.
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| - Spend a grand total of ten hours in alien hives.
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- Horseshoes and Hand Grenades!
| - Kill twenty aliens with one explosion.
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| - Win a fort battle without losing a single jumper.
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| - Complete a hard hive mission without losing any jumpers.
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| - Capture a hive queen by defeating it without using the nuke.
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| - Start a hive mission in online or local co-op mode.
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| - Win the Impossible campaign without losing a single human fort.
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| - Win the third planetary campaign.
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| - Complete a hard hive mission while jumping alone.
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| - Repair a backpack under 30% health with the Fate Cutter relic.
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| - Kill a teammate with a grenade.
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| - Unlock all rifle modifications in the S.T.O.R.E.
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| - Win the second planetary campaign.
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| - Kill your first Ordovician Queen.
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| - Kill three Ordovician Caretakers.
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| - Kill three Ordovician Crushers.
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| - Collect one of every relic type in the game.
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| - Win an online hive mission with three of your Steam friends.
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| - Unlock all utility items in the S.T.O.R.E.
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| - Carry the backpack for more than five hours.
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| - Heal 11,000 health with grenades.
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| - Win the first planetary campaign.
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| - Unlock all available jumper skins.
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| - Rescue every NPC in the game at least once.
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| - Unlock all available jumper insignias.
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| - Save Delphi during the final Queen encounter.
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| - Unlock all card suit insignias. All hail the 58th Squadron.
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- You can't take the sky from me!
| - Spend a grand total of one hour in the air.
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