Look toward the Prison Entrance from the Recreation Yard and the image may spawn on some rocks.

On the floor of Eagle Plaza, through a crack in the floor by a pipe protruding from the ground.Above the entrance to the Warden’s Office in Eagle Plaza.Through one of the windows with hanging corpses in the Citadel.Through a cracked wall on the right side of the Citadel.To upgrade it, you’re looking for a Spectral Image. To obtain the upgrade, you need to have the Spectral Shield already, so make sure you’ve done that in the steps mentioned above. You can upgrade the Hell’s Retriever to the Hell’s Redeemer, though it isn’t required for the main Easter egg. Pick it up as you go past and you’ll have it in your inventory.

When you’re zooming through the lava-filled underground, look for the Hell’s Retriever floating on top of some rocks in the middle of the river. As long as you’ve turned on the power by this point, you’ll be able to use the fast travel. When all three Cerberus heads have been satiated, head to either the Warden’s House or the Showers.

Simon says call of duty