If you are looking for an easy game that does not cost too many MS points then Altered Beast is your game lol. It only costs 400 ms points and you can get the full 200 in an hour or less.
ACHIEVEMENT GUIDE
Complete The Game - 25 points
Finish the game
The game is an old arcade game so its really short. It only has 5 stages to beat and you should be able to beat it in less than a half hour. To make it even easier play it on the easiest difficulty and max number of lives and you will have no problem.You can also save when ever you want so do it often if you are having trouble.
Renaissance Man - 25 points
Start the game once with each of the four difficulty settings
For this achievement the only thing you have to do is play on all of the difficulties. There are 4 so start up a new game with each difficulty and after you have stated up a game with the last difficulty the achievement will pop. Then you have 25 gs for all of your hard work lol.
Points III - 25 points
Score 350,000 points
For this achievement you have to score 350,000 points during the game.you should get this when you beat the game. To ensure you get this achievement collect all 3 spirit balls in the level and beat the boss the first time. You get the biggest bonus when you get all 3 spirit balls and beat the boss the first time.
If you miss any of the 3 spirit balls you have to try to collect them again and your bonus goes down every time you do not collect all 3 spirit balls. You do not have to get all of the spirit balls the first time on every level but you want to do it on at least 2-3 and you will get this achievement easily.
Untouchable - 25 points
Reach the third level without losing a life
This is the most annoying achievement in the game and its still pretty easy to obtain. To get this achievement you have to make it the third level without losing a life.This sounds harder than what it is because you can save any time you want. To make this achievement super easy keep saving every time you progress through each level. If you keep saving eventually you will make it to the third level easily.
Points II - 15 points
Score 250,000 points
You will get this achievement while playing through the game. Like with the points III achievement collect the 3 spirit balls and defeat the boss the first time to get the maximum number of bonus points.
Boss III - 15 points
Defeat the third level boss
The boss on the third level is a little tougher than the first two. Just make sure you dodge his projectiles and continue to attack him. Even if you are getting hit do not worry because you have unlimited continues.
Boss I - 15 points
Defeat the first level boss
The boss at the end of the first level is easy. He shoots red projectiles over you head they are pretty easy to avoid because their is always a gap where a projectile will not fall. Just run to gap each time while attacking him.
Wolf Hunter - 15 points
Kill 30 two-headed wolves
To get this achievement you need to kill 30 two headed wolves. You should get this before you complete the game because you have to kill the white two headed wolves to get the orbs. Kill them and the regular wolves and you should get this before you finish the game.
Multiple Beasts - 10 points
Play in an online multiplayer game
To get this achievement your need to find someone online and start a multiplayer. You do not have to even play it because the achievement pops as soon as you start the game.The only bad thing is that no one plays online so if someone needs help send me a message and I'll help you with this achievement.
Points I - 10 points
Score 150,000 points
Just like the other 2 point achievements you will get this while playing through the game. You will get this pretty early in the game.
Three in a Row - 10 points
Collect Spirit Balls from the first three White Wolves in any level - Single Player mode only
To get this achievement you need to get 3 spirit balls in a row from the two headed white wolves and it can be done in any level. You want to make a habit of doing this anyways so you get the maximum bonus points on each level
Giant Man - 10 points
Collect a Spirit Ball
This is first achievement you will receive. Just kill the first two headed white wolf and get the spirit ball.
Complete The Game - 25 points
Finish the game
Renaissance Man - 25 points
Start the game once with each of the four difficulty settings
Points III - 25 points
Score 350,000 points
Untouchable - 25 points
Reach the third level without losing a life
Points II - 15 points
Score 250,000 points
Boss III - 15 points
Defeat the third level boss
Boss I - 15 points
Defeat the first level boss
Wolf Hunter - 15 points
Kill 30 two-headed wolves
Multiple Beasts - 10 points
Play in an online multiplayer game
Points I - 10 points
Score 150,000 points
Three in a Row - 10 points
Collect Spirit Balls from the first three White Wolves in any level - Single Player mode only
Giant Man - 10 points
Collect a Spirit Ball