EXIL is a game which tell the story of Lena, a young girl which recently died. It's a platform game filled with action and dynamic fights. Her suicide will leave here deep inside of the dead's kingdom. She lost her memory and parts of her soul.
The main place of the dead's world.
Citadel huh? That big rock there? Looks like a good concept, but I don't think that the rock feels like a citadel, kinda small.
To add some suggestion to what xxMaNiAcXx said.
Unless those birds are close, that citadel does seem pretty small.
Try making them smaller, so it will seem bigger.