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