Bro Hammer Achievement Question

Games Other Halo
1

Achievement description:
Bro Hammer 50
Complete any level on Legendary difficulty cooperatively.

If I do this on Legendary with a friend, will this achievement stack with the other co-op difficulty achievements?

2

Yes. Did it with a friend and got all 3 achievements at once.

3

> Yes. Did it with a friend and got all 3 achievements at once.

Too easy.