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