Hacx: Twitch 'n Kill is a Total Conversion of Doom II, and was developed by Banjo Software.
Gameplay[]
The player has to shoot enemies and make their way through levels. There are four episodes that the player has to complete, each with five levels. The player can obtain more weapons if they so wish. If attacked, the player loses health, and if they lose enough, they die and the level must be attempted again.