To Raise the Dead (temple) you need to collect the 4 Sun Flares first.
1. Arctasia: Finish the Lakebed Challenge (purple platform). You don't need to complete in the required time to obtain the Sun Flare. I suggest wings that have great power like the Quetzal Wings and the Energy Wings. Energy Wings are more preferable because of the great turning.
The Energy Wings can be found on the highest point in Magma Core.
You have 2 boulders in front of you and 4 boulders around the lake. Put them all in the cave with water to drain the lake.
2. Spiral Heights: Finish the Wheel Goes Round Challenge (purple platform). You don't have to complete the challenge within time limit to unlock the Sun Flare. Grab the wheel and go straight down, exit is on the bottom of the cave. Fly to thermals to go up and place the wheel on the right side.
3. Sporelle (unlocks after you find all the blue crystals. Blue crystals are scattered around the world): Finish the Room to Grow (purple platform) challenge. You don't need to beat the challenge in the alloted time to unlock the Sun Flare. Pick up the Green crystals and fly out of the pit to the broken mushroom. Repeat to more times. I suggest wings with great power like the Quetzal Wings and the Energy Wings.
4. Oasis: Fly through the top tunnel of the large temple to find the last Sun Flare.
Now fly over each obelisk next to the temple in the middle of Oasis to raise the temple and unlock this achievement.
Tip: You can switch between Tilt and Touch controls by pressing the button on the right side of the screen.