Conan

Stand over each rune and use RB. All three must be activated in a relatively short time.

Pirate Raid: Health - Two on the ground and one on the ledge as you start the level. Hard to miss.
Sand Vault: Health - After you kill the lion and push the cart out of the way. One rune left of the arch, one rune near the column you push over and one on the second level behind a breakable door.
Tribal Warrior: SofD - Near the first huts you come across and the first maiden. One is on the left while entering the area, another is under a burnable hut and the last is under a burnable hut next to an archer tower in the next small hut area. These three are far apart so you have to burn the huts first.
Elephant Graveyard: Health - The first is near the archway that crumbles and the giant ape shows up. Next in back where you came to the side and the last is at the top of the cliff.
Elephant Graveyard: PM - After you break through the skull wall with the maiden you will come down a hill. The first location is behind a wall on the left path. The second is near the maiden where you have to climb up. The last is left of the second in a small caged island. You must climb up the wall and push the rock to get there.
Midnight Raid: SofD - When you start the level you climb a wall. At the bottom of the valley is the first rune. The second is higher on a ledge. The last is in front of the gate.
Outpost: SofD - After you enter the city and kill the enemies the runes are in this area. Do not push over the column because it will block a rune. The first is left of the entrance. The second is in a room on the left. The last rune is between two columns.
Outpost: PM - You will come to an out side area where two maidens are chained. The first rune is where you enter. The second rune is near an arch and a column you push over - do not push over the column because it will block a rune. The last rune is under the wood structure.
Devil Island: PM - When you get out of the mountains into the area that you have to use the giant cross bow. I found this the most challenging three runes to get because of the distance. Kill the enemies and then use the cross bow to destroy the crates behind it at the end of the dock and all three stone statues. The first rune is at the top of a tower near a chest - left side of the area left of where the second switch is. The second run is at the end of the docks. The last rune is to the far right past a stone statue.
Fallen Kingdom: Health - At the start of the level there is a drop down on the right of the dock this is where the first rune is. The second run in behind a breakable door on the left. The last rune is back on the right under a wagon you kick out of the way. Bill of Health achievement should pop now.
Well of Dreams: PM - The area that was the levers that you throw the stones on is where you need to be - this area has a chest and a maiden. The first run is up a set of ledges on the left, at the top is a lion and then a tower. Jump on the tower and the roof will collapse to the rune. The second rune is near the maiden - there is a small ledge you can jump on. The last rune is on top of a arched door way at the back of the area - you can climb this on the left. Armored Up achievement should pop now.
Spire: SofD - After you kick the giant orb to break the floor and jump down you will need to push all the blue pillars. If you cross the main bridge it will break. The first rune is on the far left across a bridge. The second rune is near another pillar on the right. The last rune is across the main bridge to the right - you have to jump a gap to get to it. Adrenaline Rush and Triumvirates United achievements should pop now.

Congrats!