Firearms offer ranged combat but come with the significant drawback of noise, which alerts nearby enemies. They have limited ammunition, requiring careful management and frequent reloads. Each firearm has different fire rates, damage, and effective ranges.

| Weapon | Description | Strategy |
|---|---|---|
| Pistol | Standard handgun. Decent damage, moderate fire rate, common. | Reliable starter weapon. Good for picking off single targets. Conserve ammo. |
| Shotgun | High damage at close range, wide spread. Slow fire rate, small ammo capacity. | Devastating in tight corridors. Use for clearing groups. Be aware of its slow reload. |
| Uzi / SMG | High fire rate, low damage per shot, large magazine. | Excellent for suppressing fire and clearing groups quickly. Best when dual-wielded (Mark). |
| Assault Rifle | High damage, moderate fire rate, good range. | Versatile weapon for mid-to-long range engagements. Good for clearing rooms. |
| Sniper Rifle | Extremely high damage, long range, slow fire rate, very loud. | Situational. Best for picking off distant, isolated targets. Not ideal for close quarters. |
| Flamethrower | Exclusive to certain levels. Continuous stream of fire, short range. | Effective for clearing groups in tight spaces. Can be dangerous to use due to its short range. |
Always consider the noise factor when using firearms. Plan your shots to minimize alerting too many enemies at once. Throwing an empty firearm can stun an enemy, buying you time.