Core systems
Alliance Hall, Barracks, Falcon Tower, Infirmary, and Training Grounds.
Sanctuary
Sanctuary Progression Guide
The Sanctuary is the account hub: it raises hero caps and power, unlocks buildings, opens events, and decides when your town can move from emergency survival to long-term control.
Milestones
Rush key levels, then stabilize.
Wiki progression data points to several important unlock levels. The right pattern is not blind rushing; it is rushing important doors, then pausing to strengthen the systems behind them.
Power spike
Lab, Raven Nest, Arena, and Warrior Statue become available.
Squad 2
Second squad, Watchtower, Curio Hall, and Infirmary expansion.
Alliance Duel
Alliance Duel opens and the early system set becomes more stable.
Raven growth
Raven Workshop and Elixir Scramble push the account into mid-game planning.
Squad 3
Major late-game milestone where costs, squads, and event planning become heavier.
Build order
Economy first, Sanctuary third.
| Priority | System | Examples | Reason |
|---|---|---|---|
| 1 | Production | Farm, Lumberyard, Herb Garden | Food, timber, and herbs fund construction, treatment, and troop growth. |
| 2 | Storage | Warehouse, Granary, Herb Storage | Stops offline production from capping and disappearing. |
| 3 | Sanctuary level | Main hub upgrade | Unlocks new caps and systems once the economy can sustain them. |
| 4 | Hospital and wards | Infirmary, treatment capacity | Turns rescued patients into progression instead of a queue bottleneck. |
| 5 | Defense | Towers, walls, choke points | Prepares for Rat Swarm pressure and settlement protection. |
| 6 | Research | Development, Squad, Soldier research | Permanent bonuses compound over time, but still need resources to matter. |
Upgrade data
Key Sanctuary upgrade checkpoints.
This snapshot focuses on levels that matter for unlocks and planning. Actual in-game time and cost can vary because Builder's Hut level, alliance research, alliance help, survivors, and fortress bonuses can reduce requirements.
| Level | Farms | Lumber | Herbs | Stars | Required buildings | Unlocks |
|---|---|---|---|---|---|---|
| Lv.6 | 92.7K | 92.7K | - | 47 | Walls Lv.5 | Barracks, Scout Squad, Infirmary, Falcon Tower, Alliance Hall, Training Grounds |
| Lv.7 | 236K | 236K | - | 61 | Training Grounds Lv.4, Alliance Hall Lv.3 | Warrior Statue, Raven Nest, first Lab, Arena |
| Lv.8 | 396K | 396K | - | 80 | Training Grounds Lv.6, Alliance Hall Lv.5 | Squad 2, Watchtower, Curio Hall, Infirmary |
| Lv.10 | 749K | 749K | 233K | 112 | Walls Lv.9, Infirmary Lv.7 | Private Stable, Alliance Stable, Antitoxin Workshop, Smelting Workshop |
| Lv.15 | 6.4M | 6.4M | 2.3M | 201 | Lab Lv.14, Training Grounds Lv.14, Herb Garden Lv.7 | Raven Workshop, new Barracks |
| Lv.20 | 57.0M | 57.0M | 17.5M | 247 | Lab Lv.19, Alliance Hall Lv.18, Farm Lv.10 | Squad 3, new Barracks, Smelting Workshop |
| Lv.25 | 260M | 260M | 91.2M | 292 | Lab Lv.24, Training Grounds Lv.24, Herb Storage Lv.10 | Heavy resource phase |
| Lv.30 | 1.3B | 1.3B | 415M | 326 | Lab Lv.29, Training Grounds Lv.29, Antitoxin Workshop Lv.15 | Endgame Sanctuary milestone |
Research path
Keep long timers working in the background.
Research should support the same logic as building: economy and efficiency first, then main squad strength, then broader troop and hero scaling.
1. Development
Progression speed, capacity, training, and healing efficiency.
2. Full Development
Important defensive and loss-reduction value, especially as PvP and alliance play grow.
3. Squad 1
Main march power and first-team performance remain the fastest visible gains.
4. Soldier research
More stable account-wide power than narrow hero research during early progression.
Event unlocks
Use events as timing anchors.
| Event | Unlock or requirement | Planning note |
|---|---|---|
| Rat Frenzy | Early levels | Early event pressure that teaches swarm-style preparation. |
| Cheese Trap | Alliance participation | Build Alliance Hall and join alliance activity early. |
| Alliance Duel | Lv.10 and alliance participation | Time upgrades and activity around alliance scoring windows. |
| Elixir Scramble | Mid-game registration | Register before the event and prepare resources before it starts. |
| Expedition | Watchtower challenge | Recurring progression and reward activity for stronger accounts. |
Build before you rush
Make the Sanctuary strong enough to deserve its next level.
Download Last Asylum: Plague and start with a stable economy, stronger wards, and smarter upgrades.
