Ok you need to gather your thoughts into a single, organized idea. Take note of the word organized, it is one of a creator's tools to effectively manage and create his or her dream game.
Now moving on to the title, judging from the story and the concept, I have the following suggestions:
•The Desolation of [Insert main knighty's name here]
ex: The Desolation of Rhaydric
•The [Insert cool word here] Within
ex: The Raven Within
The names above reflect a conflict within the character, if you want to focus on the boy-who-grew-up-to-be-a-knight. Now, if you want to name the game as a whole, then, take a proper name as a title.
•Aethervoid
(Note: you can add a catchy phrase like Battle of the Stormreaver)
•Warchaser
Reminds me of a popular game though.
Keep in mind what you want to do. Giving the game's title will lead you to ponder about the emotion, the characters, and all the contents that your game have.
Remember that the title represents your game as a whole, and is the main guy who says to the gamers, "Hey, I am a doodle-doo doodle-dah, so play me, now!"
