To activate the Halo 3 Recon Skull on the Floodgate level, first, complete the mission until you reach the area with the large floodgate. Look for a small ledge on the left side of the gate, which can be accessed by jumping from the nearby structures. Once on the ledge, you'll find a series of symbols that you need to interact with in the correct order to unlock the skull. After activating the symbols, the Recon Skull will appear, allowing you to collect it.
the fog skull takes away your radar. you find the skull on floodgate
i found it on a legit map only wich i think is the only way
When you have the skull menu brought up, click on the skulls you want to activate to activate them. Simply, move the control stick to the skull, and press the button.
you have to restart the game and activate skulls from the main menu
I'm not sure how to use them, but when you activate a skull, I think it unlocks extras in the game.
You have to either be an employee of Bungie or have completed all of the Vidmaster Challenges. And there is a myth that there is a "recon skull" apparently in Cortana. Or at least i think it is.
halo recon does not exist.
Floodgate
lol. Their is no "halo recon" its halo reach hope i helped XD
the cowbell skull, it gives you more bang for your buck, meaning that your grenades have bigger explosions
Tsavo highway and Floodgate
the recon helmet for halo 3 is unlocked by completing all of the vidmaster challenges in halo 3 and halo odst