The 2nd armor unlocked, (After fortune and before hydra) It is the first armor to give over 5 thousand health. The tank armor set bonus is 600 extra hp.
Tank Head[]
The tank head gives you 1000 hp (550 more hp than the fortune head).
Tank chest[]
The tank chest give you -1 speed and 2300 hp (1400 more hp and 1 less speed than the fortune head).