Here is the full list of all 17 Depth Hunter 2: Deep Dive achievements. It takes around 20-25 hours to unlock all of the achievements on Windows.
Achieve an accuracy of 65% or more, with 50+ fish.
Catch 30 fish
Catch 5 fish
Complete Location 1
Complete Location 2
Complete Location 3
Take 50 high quality snapshots
Take 200 high quality snapshots
Catch 100 fish
Collect 50 treasures
Collect 100 coins
Spend 24 hours underwater
Swim underwater for 10km
Swim underwater for 100km
Achieve an accuracy of 75% or more, with 100+ fish.
Achieve an accuracy of 85% or more, with 150+ fish.
Achieve an accuracy of 95% or more, with 200+ fish.