KONAMI

Enemy Alert Levels

  • Normal Phase
    Enemies in the area don't know Snake is there.
  • If an enemy detects you and realizes there is an intruder in the area, they will enter Alert Phase.
  • Alert Phase
    Snake has been discovered by the enemy.
  • Try to escape the enemies' line of sight. They will enter Evasion Phase once their Phase Gauge reaches zero.
  • Evasion Phase
    The enemy has lost sight of Snake and they are searching the surrounding area for him. You may still be found if you hide in places such as hollow trees, lockers, or under desks.
  • Enemies will enter Caution Phase once their Phase Gauge reaches zero.
  • Caution Phase
    When in Caution Phase, the enemies will patrol while on a heightened state of alert. Depending on the location, there may be even more soldiers patrolling than usual.
  • They will enter Normal Phase once their Phase Gauge reaches zero.
  • Getting Back to Normal Phase

Enemy Movements in Normal Phase

In Normal Phase, the enemies usually stick to patrolling their assigned locations (patrol route), but sometimes check for any unusual activity. However, they also sometimes simply stand in one spot, or even fall asleep.
Enemies can both see and hear you, and if they hear a sound or find footprints or bloodstains, they may deviate from their patrol route to investigate. If they don't find anything unusual, they will return to their route.
The enemies feature various statuses, which are determined by an icon above their heads.

Unconscious
Sleeping
Noticed a noise or suspicious object
Discovery
　
Suspicious

Enemy Movements in Alert Phase

In Alert Phase, enemies radio for backup and will attack you.
In order to escape during Alert Phase, you must flee from the enemies or defeat a certain number of them first.