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