Joseph is a badass data security guy. His job is to ensure the terminals data safety. In order to do so, he needs to EXTINCT all the viruses. Sometimes he uses his "Evil Look" to terminate all viruses on the screen, or his "SUDO" ability to restore damaged terminals.
Your objective is to lower the Virus Bar before the Network Bar empties
The game is a simple platformer, meaning that the player can walk (arrows or WASD), jump (space) and climb ladders (up/down). You just need to walk through a infected terminal to cleanse it. By killing viruses, Joseph gain his SUDO points and when he has them, just walk through a damaged terminal to recover it (spending one point).
Joseph's Evil Look ability is a fail-safe one. When no other option is left, use it: It'll kill all the virues on the screen. There are just 3 available per level, so be wise!