Every weapon type enhances a certain stat. You can also upgrade any stat if you have any weapon type in the inventory. (you also need to unequip the weapon).
Default weapons and A types already have the same stats and the same stat enhanced but A Type you can upgrade.
Attention!
The weapon types are all being compared with a default weapon. A Type is the only type to not follow this rule due to being the same as a default weapon as explained above.
Melee:
A Type: Increases Run Speed
B Type: Increases Range the most but it also increases Power and less Run Speed
C Type: Increases Power, has the same Range and less Run Speed
Melee weapon upgrades:
-Run Speed
-Range
-Power
Rifle:
A Type: Has the best Reload Speed out of any of them and kind of in the middle when it comes to the other stats compared to the other weapon types
B Type: Increases Power but less Fire Rate, Accuracy, Reload Speed and less Ammo in the magazine and total
C Type: Increases Fire Rate, Accuracy and more Ammo in the magazine and total but less Power and Reload Speed
Rifle weapon upgrades:
-Power
-Accuracy
-Ammo
Shotgun:
A Type: Has the best Reload Speed and Ammo (magazine and total) out of any of them
B Type: Increases Power the most and also increases Accuracy but less Firing Rate, Reload Speed and Ammo in the magazine and total
C Type: Increases Firing Rate, Power and Accuracy but less Reload Speed and even less Ammo in the magazine and total
Shotgun weapon upgrades:
-Power
-Firing Rate
-Reload Speed
Sniper:
A Type: Has the best Reload Speed
B Type: Increases Power, same Firing Rate and Ammo but less Zoom Speed and Reload Speed
C Type: Increases Zoom Speed, Firing Rate and it also increases Ammo in the magazine and total but less Power and Reload Speed
D Type: Has the same stats as B Type but the difference is that B Type you can Zoom 2x wich every other weapon type can only Zoom 1x
Sniper weapon upgrades:
-Reload Speed
-Zoom Speed
-Power
Gatling:
A Type: More Speed while Firing and Ammo
B Type: Increases Accuracy the most, same amount of Power and Warm Up Speed but less Ammo and Speed while Firing
C Type: Increases Power and Accuracy but less Warm Up Speed, Speed while Firing and less Ammo
Gatling weapon upgrades:
-Warm Up Speed
-Power
-Speed while Firing
Bazooka:
A Type: Has the best Firing Rate
B Type: Increases Bullet Speed the most, same Power and Ammo and Blast Radius but less Firing Rate
C Type: Increases Power and Bullet Speed, same Blast Radius but less Firing Rate and Ammo in the magazine and total
Bazooka weapon upgrades:
-Firing Rate
-Power
-Bullet Speed
Grenade Launcher:
A Type: Has the best Power
B Type: Increases Firing Rate, Blast Radius, Ammo and same Reload Speed but less Power
C Type: Increases Blast Radius the most, Ammo and same Reload Speed but less Power and Firing Rate
Grenade Launcher weapon upgrades:
-Blast Radius
-Power
-Firing Rate