Field upgrades are abilities and gear that give you a tactical edge in battle. Each upgrade has a set recharge time from low to high depending on the ability.
Supply Box
Deploys a box of ammo and equipment for you and your teammates. Highly explosive.
Recharge Rate: Fast
Unlocked: Default
Goliath
A small remote-controlled bomb on tracks. Controllable for 30 seconds, after which it self-destructs. Can be detonated early.
Recharge Rate: Slow
Unlocked: Level 7
Dead Silence
Temporarily makes your footsteps silent and makes you undetectable by Spy Plane, enemy intel, and Field Mics. Gun, melee, and throwing knife kills refresh duration.
Recharge Rate: Fast
Unlocked: Level 15
Jammer
Jams the minimap of nearby enemies.
Recharge Rate: Slow
Unlocked: Level 19
Deployable Cover
Rapidly-deployable ballistic cover.
Recharge Rate: Fast
Unlocked: Level 28
Armor Plates
Equip body armor, preventing damage to your torso until broken.
Recharge Rate: Slow
Unlocked: Level 32
Field Mic
Reveals nearby enemy movement on the minimap.
Recharge Rate: Medium
Unlocked: Level 40
Tactical Insertion
Marks a location as your next spawn point. No effect in one-life modes.
Recharge Rate: Medium
Unlocked: Level 44
Dead Drop
Records your current Killstreak score and awards it back when you next respawn.
Recharge Rate: Fast
Unlocked: Level 48
Trophy System
Deployable autonomous defense system that destroys up to three nearby pieces of equipment and projectiles.
Recharge Rate: Fast
Unlocked: Default