This sounds 100% right to me.
Tuning: 2 and 1/2 steps low(BEAD from low to high, but this can also be played
on the low strings of a 5-string in standard tuning)

Guitar plays first part of the intro, then the bass comes in following the drums
with open notes on the low string.
|-----------------------------|    |----------------------------------------|
|-----------------------------|    |----------------------------------------|
|-----------------------------|(x3)|----------------------------------------|
|-0-0--0-0-0--0-0-0--0--0-0-0-|    |-0-0--0-0-0-0/12-12-12-12-12-12-12-12-12|

Verse 1:
|----------------------------------------------------------------|
|----------------------------------------------------------------|
|-----------------------------------------------8-8-7-7----------|(x4)
|-1-0-0-6-6-0-0-1-1-0-0-6-6-0-0-1-1-0-0-6-6-0-0---------3-3-3-3-1|

(pause before chorus)

Chorus:
|-----------------------------------------------------------------|
|----------------------------------------3-3-3-------3-3-3-----3-3|
|-1-1-1-1-1-1-1-1------------------3-3-3-------3-3-3-------3-3----|(x3)
|-----------------1-1-1-1-1-1-1-1---------------------------------|

|--------------------------------|
|--------------------------------|
|-1-1-1-1-1-1-1-1----------------|
|-----------------1-1-1-1-1-1-1-1|

Pre-Verse:
|----------------------------------------------------------------------|
|----------------------------------------------------------------------|
|----------------------------------------------------------------------|
|-0-0--0-0-0--0-0-0--0--0-0-0--0-0--0-0-0--0/12-12-12-12-12-12-12-12-12|

For this verse, play the same riff as then other verse but only 2x instead of 4.
Then, play the chorus again.

After a short break with no bass, play this. Its the same as the chorus notes,
but mixed around differently and slower.
|-------------------------------|
|----3-----3----3---------------|
|-3-----3-----3----1--1---------|(x4)
|------------------------1--1--1|

Then, right before the final chorus(I'll kill you if you get too close!!!):
|------------------------|
|------------------------|
|------------------------|
|-000-000-000-000-0-0-0-0|

(chorus)

For this riff, the bass follows the guitar. You repeat the part after the middle
divider for as long the guitar is playing that riff after the beginning.
THE BAR IS NOT A MEASURE BAR.
|-------------------|-------------------------------|
|-------------------|-------------------------------|
|-3/2-2-------3/8-8-|----3---------------3---3-3/8-8|
|-------2-2/1-------|0-0---2-1-1/6-6-0-0---2--------|

For the ending of the song, the bass follows the bass drum withn open notes.
Do not let the notes ring.
|------------------------|
|------------------------|
|------------------------|
|-00--0-000--0-000--0-000|(You get the pattern. Stop playin when the bass drum stops.)