Total Evasion is an achievement in Deus Ex: The Fall. It is earned by evading a hostile enemy until he returns to his patrol state.
To get this achievement, it is not enough to get a guard alarmed at the player's presence. He must become hostile and start attacking you. In this (alerted) state, the minimap borders and enemy markers turn to red. Hide from the enemy's sight until his behavior turns from alerted to alarmed to neutral (Red -> Yellow -> Green).