In the first few versions, weapons could only hurt players and glass. For example, a grenade could not destroy a television but a gun could put a bullet hole in the screen. Compared to most games, the grenades and are more deadly. They tried to make the blast radius of grenades more like real life than it usually is in other games. Getting hurt by weapons always leads to some bleeding, which causes a player's health gauge to go down over time. Injuries make players slower, they also make it harder for the player to shoot where they are aiming. Sometimes, if the player does not get help from a medic, they will die.