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