I played through the game and I saw that god thing or whatever but I couldn't understand a fucking thing it said because I was playing in a loud room. can someone please tell me what happen or what it said.

It said stay tuned for the third game.

Ezio finds the valut in the sistine chapel ealier than was expected so the gods, knowing that Desmond would be revisiting Ezio's memories, use Ezio to warn Desmond of future troubles that are some related to the Sun. I'm pretty sure there is more buts thats all I remeber right off the top of my head.

there are a few threads already about the AC2 ending. Do a search champ.