Tabbed by Nick Spicer
Tuning: Drop C
Pretty close by my ear. The hammer-on parts are most likely wrong, but i couldn't pick 
the individual guitars. Other than that it should be right.
D|----------------------------------------------------------------------------|
A|----------------------------------------------------------------------------|
F|----------------------------------------------------------------------------|
C|----------------------------------7-6---------------------------------------|
G|-------7-4------9-6------9-9---------------4-4----4-4-----4h6h7-7h9h10-2h4h5|
C|---777--7---777--7---777--7---777--7---777--7--777-7--777-------------------|
     ...  .   ...  .   ...  .   ...  .   ...  .  ... .  ...

D|---------------------------------------------------------------------------------|
A|---------------------------------------------------------------------------------|
F|---------------------------------------------------------------------------------|
C|----------------------------------7-6--------------------------------------------|
G|-------7-4------9-6------9-9---------------4-4----4-4-----4--7/3-----------------|
C|---777--7---777--7---777--7---777--7---777--7--777-7--777--77--------------------|
     ...  .   ...  .   ...  .   ...  .   ...  .  ... .  ...  ..
Repeat that a couple times. Lead stays the same through the intro, but rhythm switches 
a few different things. Enjoy, and go play some Halo.