Nitrogen

The  is a Tier 4 tank that upgrades from the Chiller at level 45.

Design
The retains the same main barrel as Chiller, but it has a longer blue rectangle.

Technical
The retains the abilities of the Chiller, being able to slow enemies down. However, it has a longer effect than the Chiller.

As the

 * Smasher tanks become even easier to deal with, as you can slow them for even longer.

Against the

 * The Nitrogen is weak to bullet spammers since their bullets break on the spammer's bullet storm and never actually slow down the main tank
 * Overdrive-branch tanks can take care of the Nitrogen from a distance. Even if they slow your drones, they will still be able to damage the Nitrogen with their turrets.

Trivia

 * 's elongated blue rectangle acts as a literal indicator of its longer effect duration.