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