Mouse PI For Hire Weapons allow you to dispose of your enemies in various ways. The game has 10 unmissable weapons unlocked through story progression and one secret weapon.
Let’s see all the available weapons and their upgrade tiers!
Mouse PI For Hire Weapons and Upgrade Tiers
Most weapons are unlocked as you naturally progress through the game. The upgrade system is based on Schematics. These are collectible items that you find as you explore different areas. Some Schematics are earned from side jobs. Each weapon supports three upgrade tiers and each tier requires three Schematics. There are more than enough Schematics to fully upgrade all weapons, however, you should prioritize upgrading your favorite weapons.
Mouse PI For Hire All Weapons in the Early-Game
Some of the more earlier available weapons includes the Micer, D-Namite, Boomstick and Devarnisher. Some of which can grant you increased damage and increased clip size upon fully upgrading
Micer

The Micer is the starting weapon. It’s a reliable pistol with good mid-range capabilities and it also works well for shooting at a distance.
| Tier 1 | Tier 2 | Tier 3 |
| Increased damage, max ammo, and clip size. Reduced recoil and spread. Alt-Fire: three quick accurate shots. | Increased damage, max ammo, and clip size. Reduced recoil and spread. | Increased damage, max ammo, and clip size. Reduced recoil and spread. |
D-Namite

Unlocks during main job: Gumshoe in the Opera.
The D-Namite is a grenade that explodes on impact. It can break walls and shields. This grenade doesn’t support any upgrades.
Boomstick

Unlocks during main job: Gumshoe in the Opera.
The Boomstick is a powerful short-ranged weapon with high burst and wide spread.
| Tier 1 | Tier 2 | Tier 3 |
| Increased max ammo, damage, and pushback. Reduced recoil. Bullets pierce one enemy. Alt-Fire: charged powerful shot. | Increased max ammo, damage, and pushback. Bullets pierce two enemies. Doubled clip size. | Increased max ammo, damage, and pushback. Reduced recoil. Bullets pierce three enemies. |
Devarnisher

Unlocks during main job: Bandel’s Laboratory.
The Devarnisher applies a powerful damage-over-time effect. It’s a great single-target weapon against enemies with high HP, such as bosses. It can one-shot smaller enemies.
| Tier 1 | Tier 2 | Tier 3 |
| Increased max ammo, projectile count, and clip size. Reduced recoil. Alt-Fire: sticky grenade that deals AOE damage and applies a DOT effect. | Increased max ammo, projectile count, and clip size. Reduced recoil. | Increased max ammo, projectile count, and clip size. Reduced recoil. |
Mid-Game Weapons
Once you have successfully managed to reach mid-game you will be able to unlock a further 3 weapons such as the James Gun, Loose Cannon and Kiss Kiss. Which can grant increased pushback
James Gun

Unlocks during main job: A Bit of a Scene.
The James Gun is one of the best Mouse PI For Hire Weapons. It’s a versatile weapon with great fire rate and long-range capabilities.
| Tier 1 | Tier 2 | Tier 3 |
| Increased damage, max ammo, and clip size. Reduced recoil and spread. Alt-Fire: consumes the entire clip for a wider spread. | Increased damage, max ammo, and clip size. Reduced recoil and spread. | Increased damage, max ammo, and clip size. Reduced recoil and spread. |
Loose Cannon

Unlocks during main job: Saltwater Cambozo.
The Loose Cannon is a powerful grenade launcher. Since it has one shot, you cannot use it continually, but it’s great for delivering one single explosive blow. The Loose Cannon can break walls and shields.
| Tier 1 | Tier 2 | Tier 3 |
| Increased max ammo, radius, damage, and pushback. Reduced recoil. Alt-Fire: charged shrapnel shot. | Increased max ammo, radius, damage, and pushback. Reduced recoil. | Increased max ammo, radius, damage, and pushback. Reduced recoil. |
Kiss Kiss

Unlocks during main job: White Lies and Dark Secrets.
The Kiss Kiss is a shotgun that deals fire damage. Although powerful, the Kiss Kiss has only two shells, meaning you’ll have to reload frequently.
| Tier 1 | Tier 2 | Tier 3 |
| Increased max ammo, projectile count, pushback, and burn DOT. Reduced recoil. Alt-Fire: applies fire AOE. | Increased max ammo, projectile count, pushback, and burn DOT. | Increased max ammo, projectile count, pushback, and burn DOT. |
Late-Game Mouse PI For Hire Weapons
Whilst the last few unlockable weapons include the Jar-Head, Hellrazor, Portable Freezer and the X1 D-Mousifier
Jar-Head

Unlocks during main job: One Flew.
The Jar-Head is a late-game weapon that shoots energy waves. It applies stun, making it a worthy crowd-control alternative. Sadly, it cannot stun bosses.
| Tier 1 | Tier 2 | Tier 3 |
| Increased damage, max ammo, clip size, stun duration, and projectile speed. Reduced recoil. Alt-Fire: channeled beam that deals heavy headshot damage. | Increased damage, max ammo, clip size, stun duration, and projectile speed. Reduced recoil. | Increased damage, max ammo, clip size, stun duration, and projectile speed. Reduced recoil. |
Hellrazor

Unlocks during main job: ?lednaB evetS si lleH eht erehW.
The Hellrazor is a chainsaw that can quickly cut through multiple enemies. It’s a cool and fun to use short-ranged weapon. The Hellrazor doesn’t support any upgrades.
Portable Freezer

Unlocks during main job: The House of the Empty Mouse.
The Portable Freezer is a crowd-control weapon that shoots a beam of ice, slowing and freezing enemies. The base weapon doesn’t do any damage, so you need to switch to another weapon to kill your foes.
| Tier 1 | Tier 2 | Tier 3 |
| Increased max ammo and clip size. Enemies freeze faster. Alt-Fire: shoots an icicle that deals AOE damage and applies freeze. | Increased max ammo and clip size. Enemies freeze faster. | Increased max ammo and clip size. Enemies freeze faster. |
X1 D-Mousifier

The X1 D-Mousifier is a special item. Unlike other Mouse PI For Hire Weapons that are unlocked by completing main jobs, the X1 D-Mousifier is a reward for redeeming 20 tokens at the Spike-D prize cabinet in Little & Big bar. This raygun deals massive damage and may one-shot weaker enemies. It’s one of the best weapons, so make sure to unlock it as soon as possible. The X1 D-Mousifier doesn’t support any upgrades.
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