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