Target Audience (part 1)

So what constitutes a target audience (15-35) for a first person action-adventure game?
 
A tough question. I can't say there are tons of information available regarding this particular topic. Also there are some contradictions, however  so far my research seem to suggest:
 
•    15-35 age bracket consists of : 'hard core' & 'intermediate' (not to be confused with 'casual'!) players.
•    Predominantly male due to the 'action' attribute of the game, however some female players also likely (they  are drawn towards 'adventure').
•    Majority of the market for this type of game likely to be in their 20's.
•    Have very latest (hard core) or quality (intermediate) equipment.
•    Looking for cutting edge technologies (hard core) or  good (intermediate)standard graphics, sound etc.