The Nuker is a player weapon in Hacx. Shaped like a yellow funnel with a Nuclear symbol on the top, the nuker fires a canister containing some sort of nuclear material that causes heavy damage to whatever it hits. Following that, anything nearby is then hit by smaller explosions. It is a faster version of Doom's BFG9000 with different graphics.
The nuker is effective against everything: It will destroy most monsters in one shot and its fast rate of fire makes it able to face almost any threat. It is, however, a rare weapon and it consumes ammo extremely quickly.