Mr. Sparkle
From stage 1, make it to the stage 3 bosses in Survival Mode with the Japanese ROM.
6.32%
Very Rare
The best way to do this is in a local game with just 1 player and on the first level just keep on using the strong combo by pressing cross square on all the enemies it should be instant kill also take it slow just take on enemy then enemy don't try and rush. On the 1st boss just keep back and use the strong combo and then he will get knocked down and then move away and just repeat. On level 2 keep using the strong combo and always collect food there should be a apple right at the start in a directional sign and just hit it with cross square then you will just need the mallet and then avoid pressing cross square because it will trow it.just keep back and use the range from the mallet. On the 2nd boss the mallet should hurt the ballon loads and shouldn't be a problem. Level 3 is the same as level 1 in ways just take it slow. When you get to the twin bosses you should get the trophy. You might struggle it will take a few tries.
By MONKEY_NUKE on February 26th, 2012
Easier Than Arm Wrestling
Defeat the Wrestler without any player dying.
18.16%
Rare
You can die on purpose just before the boss fight to get your health restored,you just cant die while fighting him.
Or you can play on the Japanese ROM so you can overheal. ( you get a 2nd health bar once the first one is full)
Just keep bashing him and you will get it in a few tries.
By tw34kfr34ky on February 12th, 2012
Falling For Smithers
Playing from stage 1, fall through the deck after Smithers.
73.28%
Common
It Tastes Like Burning
Hurt Smithers with one of his own bombs.
51.16%
Common
As you battle with the maniacal Smithers, he will hurl bombs at you. In the process of doing so, he will occasionally drop blue bombs that will lay on the ground for a bit before exploding. If you grab one of them (before it explodes) and toss it into Smithers, this trophy will be yours.
By Dreakon139 on February 9th, 2012
Dysfunctional Family
Play in a 4-player match with three other people.
32.03%
Uncommon
Join up a random online game where there is only one position to fill. You will get the trophy within seconds after selecting your character (as long as you joining makes it four players total).

If there are no online games to join, use four controllers and start up a local four-player game. I haven't tested this way, but since there are no online requirements in the trophy description, I would imagine this trophy would unlock offline as well. Try at your own discretion!
By Dreakon139 on February 9th, 2012
Bongo's Angst
Playing from stage 1, get Bongo to appear in 4 different levels.
20.61%
Uncommon
Bongo hides in the trees that drop fruit when hit. You must hit the tree multiple times to make Bongo apear
By ro-llow on March 8th, 2012
Battling Seizure Robots
Playing from stage 1, defeat the battling robot.
52.85%
Common
The seizure robot is in Chapter 7, I believe.

It doesn't matter what game mode or difficulty you do it on, or whether you are online or off. I did it single-player, on Easy and with unlimited continues. Just play the game from the very beginning (Stage 1) and about halfway through the 7th chapter you'll fight the robot. Beat him and the trophy should pop.
By Dreakon139 on February 9th, 2012
Helper Monkey
While performing a Team Attack, damage 25 enemies.
14.96%
Rare
To start a team attack have any two characters stand still very close to each other for a few seconds and they will team up. Just keep doing that until you get the trophy. You can even do this in local 2 player play by yourself, because when you team up you will be able to walk around with both characters. Homer and Marge's roll attack is probably the easiest, or Bart and Lisa holding hands.
By Lil_Mermaid_Girl on May 18th, 2012
Best Score Ever
Earn 250 points (US) or 25,000 points (Japan) in a game.
40.41%
Uncommon
In the US ROM of the game, you get a point for every guy you kill (even bosses I think). The points you get in the between level bonus games don't count towards this. I played through the game on Easy, single player and with unlimited continues and got this trophy just after beating the second to last enemy in the game.

I don't think there are many opportunities to completely miss beating up enough bad guys to not get 250 overall, but just in case beat as many as you possibly can and don't pass up any opportunity to.
By Dreakon139 on February 9th, 2012
Release The Hounds
Complete the game in 30 minutes or less.
11.69%
Rare
I personally did this on the Easy difficulty, single player and with unlimited continues. I'm not sure if adding more people to the mix will help you beat the game quicker or not... but I imagine it would? Try and do it offline if you can though, less input lag and potential for lag to mess up your timer.

I had literally 4 seconds to spare by the time I beat the game, and the lead up to the ending cutscene drags on a little at the end too so try and leave yourself at least 15-20 seconds after beating the final boss if you don't want to risk getting caught over the 30 minute mark.

Going into the in-game options, you can turn on an on-screen timer to help keep track of your progress towards this trophy as you play.
By Dreakon139 on February 9th, 2012
Like Taking Candy From a Baby
Complete the game four times, once with each character.
12.75%
Rare
"Excellent"
Complete the game on Expert difficulty in individual Quarters mode.
6.16%
Very Rare
Enemies always attack horizontally, and will charge or use other special attacks on you if you are on their horizontal plane. So to avoid getting hurt, move up and down to stay off their field of attack. When you want to attack someone, let them move up/down to you (while you stand directly above them), and when you are lined up immediately use the power attck cross square .
By JCChrono on July 10th, 2012