Call of Duty: Advanced Warfare Signature Series Strategy Guide EXO SURVIVAL
The Map
There are four tiers of maps in Exo Survival. These maps are unlocked as follows:
Map Tiers
| Tier | Maps | When Unlocked |
| 1 | Bio Lab, Retreat, Detroit, Ascend | Unlocked from start. |
| 2 | Horizon, Comeback, Terrace, Instinct | Complete 50 rounds in Tier 1 maps. |
| 3 | Greenband, Solar, Recovery, Defender | Complete 75 rounds in Tier 2 maps. |
| 4 | Riot | Complete 100 rounds in Tier 3 maps. |
