Explore all Build a Bunker classes, their perks, and prices in Scrap to find the best role for surviving nuclear chaos in Roblox.

Build a Bunker is a survival game where players need to gather resources and construct shelters between recurring nuclear blasts. Every explosion resets the danger, forcing players to rebuild, scavenge, and defend their bunkers from the undead. To make survival easier, the game has many classes that you can choose from; each class has unique perks and starting items. You can unlock these classes using Scrap.
In this guide, we will cover every class in Build a Bunker, along with their stats and the best classes for beginners.
How To Unlock Classes in Build a Bunker

You can buy new classes in Build a Bunker, just follow these steps:
- Enter the lobby area before the next explosion.
- Head to the left side of the lobby, where the Class Menu is located.
- Use Scrap to purchase any unlocked class.
- Once bought, the class becomes permanently available for future matches.
Common Classes
| Class Name | Description | Price (Scrap) |
|---|---|---|
| Medic | Start with 4 First Aid Kits and gain +10 Health. Perfect for team support and recovery during radiation waves. | 40 |
| Scout | Gain +6 Walkspeed but lose 20 Health. Ideal for quick scavenging runs between bombs. | 65 |
Uncommon Classes
| Class Name | Description | Price (Scrap) |
|---|---|---|
| Chef | Start with a Knife, 8 Food Items, and gain +50% Hunger Gain. Keeps you sustained longer in the field. | 100 |
| Builder | Start with a Repair Hammer and 8 Building Supplies. Repairs are 50% more effective, making it essential for base fortification. | 130 |
| Designer | Similar to Builder, but starts with 8 Random Decorations and +75% Repair Effectiveness. Great for advanced bunker customization. | 220 |
Rare Classes
| Class Name | Description | Price (Scrap) |
|---|---|---|
| Sheriff | Start with a Police Vest, a Revolver, and 45 Pistol Ammo. A balanced class offering both defense and firepower early on. | 445 |
Legendary Classes
| Class Name | Description | Price (Scrap) |
|---|---|---|
| Soldier | Start with a Military Vest, an M16, and 60 Rifle Ammo. Strong offensive class that excels at mid-to-late game survival. | 885 |
Mythical Classes
| Class Name | Description | Price (Scrap) |
|---|---|---|
| Cleric | Start with 8 Revive Serums, a Cultist Knife, +50 Health, and gain favor with Cultists who worship you. | 1,260 |
| Gravewalker | Start with a Scythe, +100 Health, +8 Walkspeed, and can revive other users without serums. | 1,400 |
Best Classes for Beginners
- Medic: Great for learning game mechanics while supporting allies.
- Builder: Ideal for new players who like crafting and securing bases early on.
- Scout: Perfect for fast scavenging and avoiding danger between bombs.
FAQs
How Do I Earn Scrap in Build a Bunker?
You can collect Scrap from scavenging, looting items, and surviving nuclear explosions. It’s also earned from defeating enemies and completing events.
What Is the Best Class Overall?
The Gravewalker is widely considered the strongest due to its mix of speed, high health, and the ability to revive others without items.
Can I Switch Classes Mid-Game?
No, classes can only be chosen in the lobby before the next nuclear blast.
Do All Classes Start With Weapons?
Not all, only combat-based classes like Sheriff, Soldier, and Gravewalker start with weapons. Support roles begin with healing or building tools.

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