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