Enemies appear in the minimap when:
- They fire a weapon, which doesn't have a silencer or it's not a bow or when the enemy launches a Hologram attachment. I think this lasts for a second or two.
- When using Maximum Radar and the enemy hasn't equipped Low Profile module
- When they are tagged (with Recon arrow and Pinger's EMP blast only?)
- When you you're in Maximum Nanosuit mode (The support bonus you get after collecting nine or ten dog tags without dying)
Other details:
- The dots, which are completely red, are enemies who are in the same level as you. Dots with light red show that they are below or above you. There's a note, which shows are they below or above.
- Enemy holograms are also shown in the minimap.
- If enemy is in a Pinger, one of the dots will be shown outside of the map. This also seems to happen when players are still choosing their loadouts.
- If an enemy shoots in a place which isn't show in the minimap, the direction will shown in a corner of the minimap.