Last game you've beaten.

Valkyria Chronicles. And the DLC missions.

I also beat WoW recently. And by beat I mean I beat my addiction (found a better one...).

You mean WAR?

Valkyria Chronicles. And the DLC missions. I also beat WoW recently. And by beat I mean I beat my addiction (found a better one...).

That's including Selveria's missions?
I've been thinking about getting the DLC, but I'll need a prepaid card because the copy of VC I have access to is the Japanese version.

How many missions are there in her campaign? Does it let you change difficulty? Is she.. godly?

There are two DLC "campaigns". The first is a single (long) mission, and the second has 3 missions. Both are significantly harder than normal missions. By default, there is no difficulty option for the campaign and I have not purchased the add-on to add it, so I have no clue if it effects DLC difficulty.

Selveria is quite powerful, but circumstances down-play that power.

I haven't been playing games that much, but for some reason I'm still finding the Guitar Hero games pretty damn fun. I'm pretty fucking good too, so it's not really very difficult anymore... The only song on GH:WT that I even failed on before finally beating was Joe Satriali (Sp?) - Satch Boogie. Although, the last game I beat was GH: Metallica. That was actually more difficult, but only a good 3 or 4 songs took more than one try to beat on Expert.

Last game I truly beat was Portal. Most games I play don't have a definitive ending.