The Tank Upgrade is a bonus pickup in Call of Duty: Ghosts in Chaos Mode. Once picked-up and used, the player will force Cryptids to attack the player. However, the tank is invincible for those fifteen seconds, and is able to stun Cryptids with melee attacks. When in effect, the player's screen will be gray.
This upgrade essentially turns the Tank into a human Flare, fully diverting the attention of cryptids. The Tank upgrade is great to use in a pinch or when tackling tons of enemies that are within striking distance of the user. The upgrade can also be used when teammtes are in trouble, diverting attention off of them and allowing them to perform their job more effectively. It can be perfect for when an ally needs a moment to retrieve something or fix the Laser Drill.