Full list of all 48 DREDGE achievements. It takes around 15-20 hours to unlock all of the achievements in the base game on Windows.
The base game contains 40 achievements, and there is 1 DLC pack containing 8 achievements.
Find a use for the relics.
Obtain all other achievements.
Throw it back.
Catch all aberrations.
Catch all known species of fish.
Use Atrophy on a fishing spot a long way away.
Banish 10 threats.
Hear a Foghorn echo.
Use Mixed Bait to attract 3 different species to a single spot.
Install equipment into every slot on your ship.
Complete all side quests. One way or another.
Research all nets.
Research all rods.
Research all pots.
Research all engines.
Spot a fish of each category through your Spyglass.
Sell a total of $1500 worth of trinkets.
Give up the Pocket Watch.
Visit every dock in the game.
Have a combined fishing speed of 200%.
Solve all fish shrine puzzles.
Catch 150 fish in trawl nets.
Have a combined light strength of 3000 lumens.
Upgrade to the 4th tier hull.
Relinquish the Necklace.
Traverse a long distance using Manifest.
Have a combined engine speed of 75kn.
Entrust the Ring.
Catch 250 fish using rods.
Catch 100 crabs in crab pots.
Discard 25 fish.
Keep your Haste burn meter above 50% for 10 seconds.
Upgrade to the 3rd tier hull.
Surrender the Music Box.
Upgrade to the 2nd tier hull.
Sell a total of $2500 worth of fish.
Deplete a total of 25 fishing spots.
Have a full cargo.
Deliver the Key.
Complete the introduction quest.
Catch all aberrations in The Pale Reach.
Have 5 ice blocks in your cargo.
Catch all known species of fish in The Pale Reach.
Catch the Colossal Squid.
Finish the main quest in The Pale Reach.
Finish all side quests in The Pale Reach.
Equip the Icebreaker.
Feed the Narwhal.