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