In Mouse: P.I. For Hire, the B.A.N.G. side job (Ballistics Augmentation and Noteworthy Gains) introduces Tammy Tumbler’s weapon upgrade workshop. This quest unlocks the B.A.N.G. system, letting you spend schematics to upgrade your guns with better damage, accuracy, fire rate, alternate modes, and more. It is a key early side job that significantly improves combat for the rest of the game.
This guide covers exactly when the B.A.N.G. quest unlocks, how to find Tammy, and how to complete it for the upgrade feature.
When Does the B.A.N.G. Side Job Unlock?
The B.A.N.G. side job becomes available after completing the main job “Bandel’s Laboratory”.
- After finishing the lab section and returning to the P.I. Office area (near Jack Pepper’s office), look for a note on the wall where Tammy usually stands.
- The note explains that Tammy has finished remodeling her workshop and invites you to visit her new location.
- This side job is not tied to a specific main mission for collectibles — it’s purely about unlocking upgrades.
Tip: Always check the P.I. Office area after every main job. Tammy (and other NPCs like Wanda Fuller or Cornelius Stilton) often have new dialogue or notes.
How to Find Tammy Tumbler for the B.A.N.G. Quest
- Head Behind the Ammo Store — From the main P.I. Office / Soup To Nuts ammo shop area, go around the back of the building.
- Enter Tammy’s Bearings — Look for the new door labeled Tammy’s Bearings (her workshop).
- Go Downstairs — Open the door, head inside, and take the stairs down to the basement workshop.
- Talk to Tammy — She will be waiting downstairs. Speak with her to trigger the B.A.N.G. side job dialogue.
Tammy explains her new upgrade system and officially unlocks the B.A.N.G. desk right next to her. You can now insert schematics to upgrade weapons (Tier 1 costs 1 schematic, Tier 2 costs 3, Tier 3 costs 5 per weapon).
How to Complete the B.A.N.G. Side Job
Completing this quest is straightforward once you locate Tammy:
- Speak to Tammy in her new basement workshop (as described above).
- Listen to her explanation about the B.A.N.G. system.
- The side job completes automatically during or right after the conversation.
- Rewards: Immediate access to the weapon upgrade system + the ability to spend any schematics you’ve already collected (or will find later).
No additional items or backtracking are required for this specific side job — the main goal is unlocking upgrades.
Pro Tip: After completing B.A.N.G., immediately upgrade your favorite weapons (many players recommend maxing the James Gun early, as it’s one of the strongest). Schematics are found throughout levels, given as side job rewards, or purchased from shops.
Why the B.A.N.G. Upgrade System Matters
- Upgrading weapons to Tier 3 is required for the “We’ll B.A.N.G., ok?” trophy/achievement.
- Higher tiers improve damage, handling, ammo capacity, and add powerful alternate fire modes.
- Tammy remains in her basement workshop for the rest of the game. You can return anytime to upgrade or talk to her for other side jobs (like “Blueprints, Please,” “Show Some Culture, Jack,” “Poster Girl,” or “Behind the Nuts”).
Additional Tammy Tumbler Tips for 100% Completion
- Tammy gives several other side jobs throughout the game — always talk to her before starting new main jobs.
- She stays in the basement after this quest, so her location is permanent and easy to revisit.
- Collect schematics aggressively — they are essential for full weapon upgrades and the platinum trophy.
If you’re stuck on finding the note, accessing the basement door, or need help with Tammy’s other side jobs (such as Blueprints, Please in the Old Subway or Poster Girl), provide more details for targeted advice!
Unlocking the B.A.N.G. system through this side job is a major early-game power spike in Mouse: P.I. For Hire. Find Tammy in her remodeled workshop, upgrade those guns, and keep sleuthing through Mouseburg with better firepower!
