He means (Warning:Don't look if offended by minor Cursing)

and by that he means that he thinks you're showing off that you beat one of 20 000 AG games (Because of "WITH NO HELP" part)and now you're just hear to show your supremacy to fools like me :)
This is all what i think Iloveracecars is saying. Personally i couldn't play Castaway, wanst my type of game :P