i need help with halo 3 skulls,i have 11 out of the 13..?

[Andrew]

i need someone to help me get this skull the catch and iwhbyd..my gamer tag is "south side lee" please help me get this skulls. thank you.
i just need someone to help me reach to the skull and provide back up for me when im getting shot at.

 

[Snappy1102]

I had to have my friend help me on the catch skull, but i can help with the iwhbyd one. DARKSIDE1102 if you wanna play