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