Call of duty 4

Halo 3

Mass effect

AND just to brake the ice if you like racing Forza 2

so you have 2 shooters one RPG and a racing game.

Its up too what game you are playing.

E.G. Call of duty 4 is only

Halo 3 is up to 4

and something like Gears of war is two.

I have been trying to find a date but nothing.

Yea halo wars and army of two looks good, but i also cannot wait for:

battlefield bad company

and

END WAR Tom Clancys.

I think that you should play it on legendary right away. This is because it will make you play better and because its a good challenge + YOU can get all of the achievements at once, normal and heroic. Good luck with the game.