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