Obtain a legendary item.
Level up to level 30 with the submarine Demolisher.
Unlock the submarine Demolisher.
Defeat 5 starfish.
Defeat 1,500 electric eels.
Defeat 16,000 piranhas.
Level up to level 30 with the submarine Ninja.
Level up to level 30 with the submarine Harvester.
Defeat a boss on normal difficulty.
Defeat 3,000 puffer fish.
Defeat 750 electric eels.
Defeat 24,000 jellyfish.
Unlock the submarine Ninja.
Level up to level 30 with the submarine Armored.
Defeat 8,000 piranhas.
Level up to level 30 with the submarine Resistant.
Defeat 1,500 puffer fish.
Defeat 12,000 jellyfish.
Complete the bonus mission Treasures.
Defeat 250 electric eels.
Complete a mission with all level 1 merchant deals.
Unlock the submarine Resistant.
Upgrade a chipset slot to maximum level.
Upgrade all weapon slots to maximum level.
Complete the bonus mission Prospection.
Defeat 500 puffer fish.
Complete the mission Pollution.
Unlock the submarine Havester.
Complete the mission Protection.
Complete the mission Minefield.
Unlock the submarine Armored.
Defeat 2,000 piranhas.
Complete the mission Fissures.
Unlock the trader.
Complete the mission Laser Artifact.
Complete the mission Barrels.
Upgrade a weapon slot to maximum level.
Level up to level 30 with the submarine Balanced.
Defeat 2,000 jellyfish.
Complete 1 blueprint barrel event.
Unlock the expeditions.
Defeat 25 starfish.
Defeat 50 starfish.
Defeat 2 sea urchins.
Defeat 12 sea urchins.
Defeat 24 sea urchins.
