This building was once a police station before the catastrophe, responsible for maintaining local security and social order. However, after the disaster, it quickly transformed into a core part of the shelter, taking on the crucial mission of protecting survivors.
Alliance Center
I always upgrade this right after HQ because it increases the amount of helping hands you get, meaning one more person can press the help button on your upgrades. It also increases the amount of reinforcements your HQ can take at certain levels.
Assaulter / Shooter / Rider Camp
Always keep these buildings upgraded to max level. Higher tier units unlock with certain levels, e.g. level 14 unlocks tier 5 units, level 17 unlocks tier 6. Higher tier units increase your power tremendously.
Villa
Increases construction speed.
Restaurant
Increases unit training speed.
Increases research speed
Unlocks ability to see enemy units when scouting and the level at level 10. At level 13 you can see reinforcements as well. Also increases scouting speed.
Increases the number of units you can train.
Faction Buildings (Toxic Garden / Dawn Tower / Steel Factory)
Increases your heroes’ stats for that faction. And level 20 is needed to continue upgrading your heroes after 5 stars.
Increases the amount of resources you can take per attack when looting! Recommended!
Increases the power of your rallies and adds an extra seat with every 5 levels meaning at level 10 your rally holds 6 people, level 15 increases that to 7 people.
Increases the number of beds so you can treat wounded units, preventing them from dying. When your hospitals are full, your units will die!
