Not very good.
Honestly, I didn't laugh once that entire flash. Every single one of the jokes was horribly forced, and just not funny. It was a spoof of halo, but there wasn't any witty satire at all, just random unfunny jokes that made no sense.
Another complaint is that the animation was pretty poor in parts of it. The voice acting was also quite sub par.
I can tell a lot of hard work was put into it, and I respect that, but you need much better writing if you're going to try and spoof something.