At level 21, the Armory is overhauled. The entrance appears to have changed from a metal door to metal shutters. The crates containing ammunition and Barrage missiles, as well as the motor are removed. The front is reinforced with some pins, there are two vents and two hatches on the roof of the Armory, and the side that once housed ammunition gains caution designs on its edge. When the Armory is upgrading something, the hatches open to reveal what appears to be spinning gears, and a light is visible from the opening.. lvl5 - 312 riflemen,9 tanks, 1 scorcher.18 heavies, 48 zookas lvl6- 12 medics, 432 rifleman, 9 tanks, 48 heavies. Similarly, the Radar must be upgraded to level 2 in order to upgrade the HQ to level 5. To upgrade your HQ to level 6, Boom Beach Wiki is a FANDOM Games Community..