Each level in this game will have either one Easter egg, secret, or unlockable feature
Multiplayer Characters and Outfits
In "Outdoors Sporting Goods" store in New Jersey, Lian will walk in a store that looks exactly like her scuba diving gear worn in Syphon Filter 2.
Instead of players selecting a multiplayer game for themselves, they select quick match based on best internet connection and will be playing a randomly selected game mode. Players can select either standard or hardcore mode. Most games will be in first person while a couple others will be third person.
Multiplayer Mini Games
Each lobby will give players 1 minute to prepare for an online match. Players can only change their outfit and equipment outside of the gameplay. Players who prestige will unlock custom camo for their gear
After a player reaches prestige passed he rank commander in chief, into agent, players can customize their uniform and weapons. Double Agent will unlock SF-1 characters, Special Agent will unlock SF-2 characters, Commander will unlock SF-3 characters, Director will unlock AC-130
Players who have trouble completing a mission alone will have either one bot or another player to fight side by side.