The place names ae pretty cool... the plot could do with some work... I kind have to agree being knocked out and in a coma for two years is kind of excesive... I mean who looked after him for two whole years ?...
They would have had to see to him wetting him self, shitting himself, feeding him, bathing him etc... He would have lost loads of body weight and would be in no fit state for battle for some time...
I think a better polt (If you want him out of the picture for two years):-
Damian a young warrior fairly good with a sword was training against a pratice dummy (Scrare crow in the tile set)... There was a flash of light and before him stood a shadowy figure the figure muttered your fate will not hinder my masters and zapped Damian with a strange spell that incased him in an energy dome. Many mages and wizards got called out to see Damian but could not break the spell... It took two years before the spell failed... Normally in these conditions a spell does not fail unless the creature or caster has been killed, but a high level creature or caster would not fall too easy... Damian once recovered asked his farther about his roots in a hope to work out why the caster mentioned his fate... It turns out Damians Farthers Farther was a great warrior and helped defeat a might opresser of a previous era... Damian gets handed his Grandfarthers Sword and sets out to repeat history cutting down all evil that comes before him... Damian also finds out he had an older brother who went out to stop evil but never returned, Damian hopes it was his brother who broke the spell and killed the shadowy creature that cast the spell on him.