Here is the full list of all 32 Shelter 69 achievements.
Recruit 25 workers
Reach level 25 with 10 champions
Unlock Chapter 5
Complete 1000 daily tasks
Disassemble equipment 250 times
Build 25 rooms
Complete 1000 QTEs
Complete Quantity Over Quality or Only The Premium Quality
Unlock all 13 Pocket Waifu characters!
Clear 15 obstacles
Increase equipment level 250 times
Visit 25 secret locations
Complete 50 flirts
Survive 25 invasions
Disassemble equipment 50 times
Log in daily for 30 days
Complete 50 expeditions
Increase equipment rarity 20 times
Complete 10 flirts
Complete 50 daily tasks
Increase equipment level 10 times
Complete 50 QTEs
Log in daily for 7 days
Complete Give Me Regular or Got Something Better?
Use skills 250 times
Visit 500 secret locations
Complete 1000 expeditions
Survive 1000 invasions
Upgrade rooms 50 times
Ressurect 50 champions
Recruit 250 workers
Increase equipment rarity 250 times