A hidden character can be detected with a successful Spot
check, depending on the distance from an enemy and whether the character is standing within the enemy's line of sight. Enemies are continually vigilant.
When a player is close, Spot symbols above their head (a "+" symbol with one, two or four eyes, in white, orange and yellow colors in order of critical detection) begin to flash above the enemy's head as it tries to hone in on the player.
The symbols and their changes represent the enemy's Spot bonuses, which grow as long as the player is within the enemy's visual arc. Hide works as a buffer against immediate fail of a Spot check. Hide, however, cannot ultimately stop a Spot attempt to succeed but only to slow it from succeeding.
Players may see one to three eye symbols over their head. With Update 19, these eyes are a warning to the player that an enemy is attempting to Spot them. The greater the number of eyes, the more likelihood that the player will be soon detected. A stealthed player that sees any eyes about their character should find better cover immediately.
A discovered player will see a large red eye symbol above an enemy's head.
It is now possible to escape from an enemy's sight by first putting sufficient distance from an enemy (reducing their ability to hear you), breaking the line-of-sight between the player and the enemy, and then returning to stealth. An enemy will search for you for a time and then stop. While enemies are pursuing you, they don't get Spot bonuses.