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