KONAMI

Enemy Alert Phases

The display in the upper left corner indicates enemy alert status (phases). If spotted by the enemy, they will call for backup to attack on a large scale. Take out enemy soldiers who have found you before they have time to call for backup to prevent them from calling in support.

• NORMAL PHASE
  The enemy is unaware of the player's presence.
• The player is discovered
• ALERT PHASE
  The enemy has found the player and is attacking. Take out the enemy or escape from their field of view for the counter to decrease.
  
• Counter reaches zero
• EVASION PHASE
  The enemy loses sight of the player and searches for him.
  
• Counter reaches zero
• CAUTION PHASE
  The enemy gives up searching, but is still on guard.
  
• Counter reaches zero
• Getting Back to Normal Phase

Enemy Reactions

If the player hasn't been spotted, enemy soldiers will patrol their assigned areas (patrol route) and check for any unusual activity.
Enemy soldiers can both see and hear you, and if they see or hear anything suspcious, they will leave their patrol route to investigate. If they don't find anything unusual, they will return to their route.
Enemy status is displayed above their heads using icons.

	Noticed a noise or suspicious object
	Unconscious
	Discovery
	Sleeping
	Suspicious
	Near-death state (Will die after a certain amount of time has passed)
	Incapacitated (Unconscious or sleeping, and temporarily unable to fight)