Help with Halo 5 Co-Op achievements

Hey there, I am trying to do all the achievements on Halo 5, in fact I have done everything but the Co-Op ones, my friends don’t play Halo and one say that he will play with me to help me do the achievements but he always make excuses, so I need someone friendly enough to beat the game on Heroic co-op with me.

I have done the first 2 missions so far from a play session that my friend didn’t get an excuse from, if anyone is interested in helping me with the others I would appreciate, I am European though.

I’ve been achievement hunting for both Halo 5 and MCC anyways, so I don’t mind helping if you still need someone.