Halo 3 Campaign help please?

[Gabe]

My friend and I are playing Halo 3 Campaign and have a couple of questions.

1. Will team scoring unlock the scoring achievements for the levels.
2. Do you get as many points for killing aliens on normal as you do on legendary modes? It doesn't seem so.

Thanks for your help!

 

[sadgirl]

yes to the first question and no to the second p.s. more points for head shots

 

[ruffrage9]

I don't know