What is the hardest achievement in Xbox 360?

**Rise Up.** · #1 (**permalink**)

I would think the achievement "invincible" in Mega Man 10 or 2010 is impossible to get,
You have to beat the game without dying.

or Halo 3: ODST firefight achievement "Endure", i played that game myself and made it to set 3. F*ckin' hard lol.

What achievement do you think is hard (or impossible) to get?

There is another impossible achievement in Mega Man 10
It's called "Mr. Perfect"
You have to beat the game without taking damage.

**Gamertag** · #2 (**permalink**)

I would have to go with the Mr. Perfect in Megaman 10