The available number of buildings for installation increases with every upgrade of Headquarters. All buildings players can place as they want and where they want and therefore it is very important to make the correct base defensive layout. As for me, I think that strong defense is the key to a successful game in Boom Beach and the game strategy should be built on the successful defense. In this post I’ll share my experiences and try to show the best layout strategy in the early stages of the game (HQ 5-8 lvl). I hope this post will be useful for beginners.. At level 7, the Headquarters gains a blue corrugated metal roof, a hatch on the roof and 3 poles at the back. Boom Beach Wiki is a FANDOM Games Community.. The Headquarters is the nerve centre of your Boom Beach base. Upgrading the HQ unlocks new base buildings and upgrades..