The Cavern
After jumping across a few poles and pillars (remember to use the Prince + Elika jump for those long leaps), you'll eventually grab for a column that's actually just an illusion and fall to the fertile ground below. Unfortunately, Elika will be held captive by The Corruption, leaving it to you to free her--but don't worry, even though she's restrained, she can still rescue you if you fall or lose health.
Okay, so now you have to find some way to reach the Concubine. Leap to the pillar behind Elika, then to the ring on the opposite wall. Follow a few more platforms until a wall blocking the path--carefully leap to the beam on the left, just beyond the wall, to reach the Concubine. Get close and slash her with your sword (if she disappears before you can slash her, step away and she'll return)--what?! It's a decoy!
Okay, let's try attacking her again. Return to the fertile grounds, but this time leap to another column in front of Elika. Climb to the top, then head left at the platform and slide/jump down the ramps to meet with the Concubine once again. Try to slash her again to reveal it as yet another decoy. Return to the fertile grounds once more and reclimb the pole behind Elika again and follow the path to give the Concubine one final slash--she will now enage you in battle down in the fertile grounds. Show her what you've got!
