As long as you manage to achieve whatever you wanted to do, how you did it doesn't matter.
For example, when playing Halo 3 Legendary co-op, I just stood behind and acted as the spawn guy, while my friend ran ahead and fought. I got the legendary achievment afterwards, even though I did hardly any work.
I got my first Perfection yesterday, during a game where the enemy team had one AFK guy, one of them left, and the other guys sucked. And the majority of the game I was hiding on ramps and around corners with active camo.
Another example is when I was playing the final boss battle in [PROTOTYPE], I just hijacked a helicopter, hovered above the ship, and spammed missiles at him.
So it doesn't matter HOW you get something. As long as you actually get it.
For example, when playing Halo 3 Legendary co-op, I just stood behind and acted as the spawn guy, while my friend ran ahead and fought. I got the legendary achievment afterwards, even though I did hardly any work.
I got my first Perfection yesterday, during a game where the enemy team had one AFK guy, one of them left, and the other guys sucked. And the majority of the game I was hiding on ramps and around corners with active camo.
Another example is when I was playing the final boss battle in [PROTOTYPE], I just hijacked a helicopter, hovered above the ship, and spammed missiles at him.
So it doesn't matter HOW you get something. As long as you actually get it.