Finish the game on Easy Mode.
Find all the health upgrades.
Finish the game in Normal Mode in under 45 minutes.
Defeat the rock creature in the caverns.
Finish the game on Normal Mode.
Defeat the IRI Assassin for the last time.
Destroy the missile frigate.
Destroy the reef guardians.
Encounter the IRI Assassin.
Find all the ammo upgrades.
Unlock the high-security gate.
Put the rogue scientist to rest.
Find every upgrade.
Explore every area on Tethys.
Defeat the IRI Assassin for the second time.
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