
When this "stalking" music ends, the Nemesis has stopped chasing the player, and will not appear until the next scheduled encounter. Also, whenever he's chasing you and you enter in a Save Room, the music will change. This means that the Nemesis could appear anywhere, anytime. If the player decides to run away from him, special music will start playing. However three of them must be fought: after he takes down the UBCS helicopter, and the last two encounters in the P-12A plant. From his eleven encounters, the player can run away on eight.

The Nemesis wields and uses a Rocket Launcher at three specific times: the encounter inside of the RPD when the player is outside of the Umbrella sales office or outside of the substation (depending on player progression), and outside the Clock Tower after contacting the helicopter (if the player decided to jump out the window).

The Nemesis is encountered eleven times throughout the game. If the player does enter a save room while they are being chased by Nemesis, he will appear outside, waiting for the player. However, it can follow the player from some areas to other areas, but it cannot go into save rooms. When confronted, the player can either exit the area to run away from it or do enough damage to it to temporary bring it down.

Nemesis is encountered many times throughout the game.
