Completed as in finish the game, or as in get all achievement/trophy points?
For the latter, completed for me this year -
Terminator Salvation - Buggy as hell, but not a difficult 1K.
Two Worlds - Bloody visit all caves and locations achievements....Brenzz, I can finally return this to you now!!

Wall:e - Don't say a word
1 vs 100 - Can't wait for the next series of this, great fun.
Lego Indiana Jones 2
I have finished the following, but not got all achievements -
ME2 - I actually prefer ME1 and missed the Mako. Just need to finish on insanity and rack up warp/fire kills.
AC2 - Better sequel.
MW2 - Playing through on veteran, also need to do spec ops.
The Incredible Hulk