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