Weapons are the primary method of defeating enemies in GoNNER. There are seven weapons: six guns, and one melee weapon.
| Weapon | Ammunition | Damage | Description |
| 20 | 1 | Fires a steady stream of bullets. | |
| 7 | 1x5 | Fires a spread of five bullets that disappear after traveling a short distance. | |
| 18 | 1 | Fires a continuous laser that pierces through enemies. | |
| 9 | 1(3) | Launches an accelerating projectile that explodes upon contact with an enemy or obstacle. | |
| 9 | 1 | Fires a slow-moving bolt that chains towards nearby targets. The beam will persist depending on how long the firing button is held. | |
| 3 | 2 | Melee attack with a very short cooldown. Retains ammunition for every blow landed and is instantly reloaded upon contact with with the floor, walls, or by landing on an enemy. | |
| 18 | 1 | Fires a steady stream of arcing projectiles that only knock enemies back in the air but create a blast that harms enemies upon contact with floors or walls. |
