Advanced Warfare features several hidden gems for players to discover:
- Zombie Mode Tease: In the 'Bio Lab' multiplayer map, if you shoot specific glowing green canisters in a certain order, a zombie will briefly appear in a containment unit, teasing the Exo Zombies mode.
- Kevin Spacey's Desk: In the 'Atlas' mission, during the initial tour of the Atlas facility, you can find a desk with a nameplate that reads 'J. Irons' (Jonathan Irons, played by Kevin Spacey). Interacting with it might trigger a unique voice line or animation.
- Developer Messages: Keep an eye out for subtle graffiti or posters in various campaign missions that might contain inside jokes or messages from the development team.
- Hidden Weapon Camos: Some weapon camos require specific challenges or achievements to unlock, often hinting at unique playstyles or hidden objectives.
Exploring every nook and cranny of the maps, both in campaign and multiplayer, can often lead to these delightful discoveries. They add a layer of fun and reward for observant players.