Computer-controlled players, called "Simulants", can be included in multiplayer matches.[17] The appearance, team affiliation, skill level and playing characteristics of each Simulant can be individually customised; each Simulant can be assigned pre-set behaviours, such as a tendency to pursue the highest-scoring player, or a restriction to only attack using fists and disarming moves instead of gunfire.[17] On higher difficulty settings, Simulants perform actions at a superhuman level.[17] In team games, players can issue allied Simulants with orders to perform certain tasks.[6] The Combat Simulator also includes 30 "Challenges", pre-set games against Simulants which may be tackled by one or more players.[18] The Challenges cover a variety of game types, weapon arrangements and level setups. By completing Challenges, additional features such as new weapons, player models and Simulant difficulties are unlocked in the Combat Simulator.[18] At the end of a match, the overall results are shown, alongside information about the individual players' performance: colour-coded awards divided into multiple categories based on armour damage, accuracy and ammunition usage are given to players based on their overall performance.[2] Players are also ranked according to their performance: the better the performance, the higher the grade, with the highest receiving a special username and password as a reward.[19]