Every healing of injured teammates and every killing of opponents increases a players score and "Honor". Completing the game's missions affects a player's score in a good way and his "Honor" points as well. The score is saved in the player's account that was being used. Some servers only allow players with certain Honor levels to join. The most common is to not let anyone with less than 10 Honor in because this is the base level that everyone starts with. Some also do not let players with too much Honor in. The developers say that "Honor" is based on the values of the Army: "Loyalty, Duty, Respect, Selfless Service, Honor, Integrity and Personal Courage or Leadership". Its main purpose in the game is stop "team-killing", which is a problem in a lot of online first-person shooters (see team killer).