-ROCKETS USED BY PROXIMITY MINE LAUNCHER AS AMMO- To get the Cyborg all you really have to do is beat Plantera once and he'll show up if you have proper housing. Now the stuff he sells isn't all that interesting at all. He'll sell 4 Rocket types 2 of which are sold during a Solar Eclipse and 1 during Bloodmoon. The other Stuff is Nanites , used for crafting bullets. A Proximity Mine Launcher which is a lackluster weapon to say the least.