The Viper received the ability to be upgraded to Level 16 in the Game Update of Aug 06, 2014.
The Viper lost the ability to be placed into Bunkers in the Game Update of June 12, 2014.
The Viper reduced its Capacity Cost from 500 to 250 in the Game Update of May 29, 2014.
The Viper received the ability to be upgraded to Level 15 in the Game Update of Apr 02, 2014.
The Viper received the ability to be upgraded to Level 14 in the Game Update of Jan 08, 2014.
The Viper was introduced via the [Event Shop]] during Operation: Desert Recon ( Nov 21, 2013 ).
The Viper produces the Corrosion Status Effect.
The Viper cannot be placed in any type of Bunker.
The Viper is the fourth Unique Unit and the first Unique Infantry Unit to be introduced.
The Viper is the fourth Unit with the ability to Shoot on the Move.
In Order to have a Level 13+ Viper the Player must be a Minimum of Level 31.
This is due to the XP gained upgrading the required Buildings to the required Levels.
Pixel Sheet Code : 67
The first Unique Infantry unit introduced - The Viper
The fastest unit in in the Infantry Class - The Viper
“ The state-of-the-art Viper sprints and shoots Corrosion shells at enemy targets, weakening enemy defenses while soaking up damage. ”
— In-Game Description
“ The Thorium infused Viper has increased movement speed and its corrosive effect amplifies damage even further. ”
— Level 5 Description