Updates on the Second Crusade

So, I've finished off Castle Crashers (finally!); Glork and Arena Master were not easy in terms of time invested. I picked up Vigilante 8 which had an online Achievement that was much easier to finish. In terms of games that I cannot easily finish by myself (because they require at least a second person), I present the following list:

Aegis Wing: Have to finish on Insane mode (not that bad) and complete a 4 ship formation (I could, actually, do this myself).

Alien Hominid HD: Need to play through at least once. Maybe it's easier to do with more people; haven't looked into it that much.

Battlestar Galactica: The online achievements are near impossible because NO ONE PLAYS THIS GAME ANYMORE.

Call of Duty: World at War: Need someone for the Map Pack 2 achievements; as well as the original online achievements (Edit: got all the non-DLC ones. Now to kill Nazi/Tojo Zombies). Shouldn't be so bad.

Gears of War: Need to complete on Insane, finish the game as Dom (can do both split-screen and at the same time), and collect the rest of the tags (can do myself).

Gears of War 2: Need to complete on Insane, play with a friend (see above).

Streets of Rage 2: Similar to BSG, I simply need someone to do matches against.

Super Puzzle Fighter 2 HD Remix: I simply need to invite everyone to a 4 player game. I can do the 7 chain achievement myself.

Worms: Simply need to be in a four player Xbox Live game. (Edit: got 'em all).

I'm a little disgusted with myself because I bought the Avatar game at Best Buy yesterday. It was only 6.50 USD in the check-out line; how could I say no? I'm also thinking about getting 50 Cent: Blood on the Sand, simply (and somewhat ironically) because of this comic.