Full list of all 43 DAVE THE DIVER achievements. It takes around 15-20 hours to unlock all of the achievements in the base game on Windows.
The base game contains 15 achievements, and there is 1 DLC pack containing 28 achievements.
Caught 10 fish with a Sniper Rifle.
Caught 20 fish with melee weapons.
Discovered the under-sea village.
Entered the Deep Sea for the first time.
Bought First Interior Item.
Completed the Dolphin's request.
Picked up 100 items.
Caught first shark.
Researched 5 new dishes
Reached Bronze Level in Cooksta.
Completed the gun tutorial.
Fixed the Sushi Restaurant.
Made first equipment upgrade.
Enhanced 5 dishes.
First time bringing Dave back from the brink of death.
Researched 30 new dishes.
Vegetable farm expanded to maximum.
Bancho Sushi formed a branch restaurant.
Watched the ending credits.
Installed sprinklers in the garden.
Fice field expanded to maximum.
Fed cat 20 times.
Collected all the blueprints.
Entered the Glacier Passage for the first time.
Duwa's workshop opened.
Achieved Platinum rank in Cooksta.
Captured all of the Sea People murals.
Took 10 photos at Photo Spots.
Discovered the Glacier Passage.
Gumo's seeweed farm opened.
Mima's restaurant opened.
Enhanced gun 3 times.
Got to know Momo a little better.
Caught 300 fish.
Sold 200 items at workshop.
Raised 5 GYAO!s.
Captured 5 FishMon.
Trained employees to level 20.
Achieved Diamond rank in Cooksta.