Grudge

Grudge is a tank upgrading from Flail, Bumper, and Interceptor at level 60.

Design
Grudge resembles a destroyer with an ornamental flail tip underneath its barrel. The smasher on the tip of the Grudge does not pull back when the player fires.

Technical
Grudge shoots bullets with flails on each side. The bullets rotate with speed proportional to the player's bullet speed. It shoots another upgrade from the Flail, called a Double Whammy.

Grudge upgrades from Flail, Bumper, and Interceptor at level 60 and does not upgrade further.