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