Marvel vs. Capcom 2 Cheats

In order to do this glitch Chose Juggernaut and 2 other fighters.
Do the Power Up Special and then tag out with another fighter, then switch back to juggernaut and
do the power up special again, you are now in Glitch mode and do much more damage.

After you win a match and your character does his/her victory pose, press Start. You'll be able to attack your fallen opponent while he/she is down.

Enter it in at the versus screen after you select your characters, and hold it until the match begins

Total number of Single Player Achievements: 4
Total number of Multiplayer Achievements: 8
Total Points: 200

Avengers Assemble!Avengers Assemble!
Reward: 20 Points
Objective: Beat the game with Avengers theme team.

Vampire SaviorsVampire Saviors
Reward: 10 Points
Objective: Beat the game with Darkstalkers theme team.

Uncanny HeroesUncanny Heroes
Reward: 10 Points
Objective: Beat the game with X-Men theme team.

World WarriorsWorld Warriors
Reward: 10 Points
Objective: Beat the game with Street Fighter theme team.

Multiplayer:

Mega Buster
Reward: 10 Points
Objective: Win 50 Ranked Matches online.

#1 in the Hood
Reward: 20 Points
Objective: Win 100 Ranked Matches online.

I Am Doom
Reward: 20 Points
Objective: Defeat opponent in under 15 seconds.

Hyakuretsu Kyaku
Reward: 10 Points
Objective: Perform a 100 hit combo.

Berserker Barrage
Reward: 20 Points
Objective: Perform a 200 hit combo.

Shun Goku Satsu
Reward: 10 Points
Objective: Perform a 3 part hyper combo.

The Best There Is (At What I Do)
Reward: 50 Points
Objective: Perform 50 One Character Victories within 20 unique teams.

Get Out Of Here!!!
Reward: 10 Points
Objective: Perform 10 snapbacks within 20 unique teams.

After completing all achievements and then killing someone in 5-10 seconds x3 you should be able to have invincibility, powerful hits and a better team the next time you start a new game.