Time signature changes are shown like this:
|----
|3:--
|4:--
|----

This means to repeat the last two measures:
----|//--
--*-//---
---//-*--
--//|----

As usual, guitars are tuned to Eb.  Hanneman has the left stereo channel.

Starting Tempo: 145 bpm

Intro Riff
Gb|---|-LeftGtr--------|----------------|----------------|
Db|---|----------------|----------------|----------------|
Ab|-5-|4-------------5-|4-------------5-|4-------------5-|
Eb|-3-|2-------------3-|2-------------3-|2-------------3-|
  |   |                |                |                |
Gb|---|-RightGtr-------|----------------|----------------|
Db|---|----------------|----------------|----------------|
Ab|-5-|4-------------5-|4-------------5-|4-------------5-|
Eb|-3-|2-------------3-|2-------------3-|2-------------3-|
P.M .                .                .                .

Tempo change to 220 bpm (!)          /---repeat this 3x------------
Gb|-LeftGtr--------|----------------||----------------|------------||
Db|----------------|----------------||*---------------|-----------*||
Ab|4-------5---4---|----------------||*-------5---4---|-----------*||
Eb|2-------3---2---|----------------||--------3---2---|------------||
  |                |                ||                |            ||
Gb|-RightGtr-------|----------------||----------------|//----------||
Db|(b9)--------------|7-------6(b9)----||*-------------*-//----------*||
Ab|7-------5---4---|5-------4/7-----||*--------------//-*---------*||
Eb|--8-7-0-3---2---|--000000----0000||--------------//|------------||
P.M  . . .            ......    ....

Riff A
Gb|----------------|----------------|
Db|(b9)--------------|7-------6(b9)----|
Ab|7-------5---4---|5-------4/7-----|
Eb|--8-7-0-3---2---|--000000----0000|
P.M  . . .            ......    ....

Both Gtrs play Riff A 4x

Riff B
Gb|----------------|--------5p4---4/|7---------------|--------5p4-----|
Db|----------------|--------5p4---4/|7---------------|--------5p4---5-|
Ab|2---------------|----------------|----------------|--------------5-|
Eb|0000000000000000|00000000----0---|--00000000000000|00000000----0---|
P.M ............... ........    .      .............. ........    .

Gb|----------------|--------5p4-----|----------------|-----------------|
Db|----------------|--------5p4---5-|----------------|--------10p(b9)8---|
Ab|----------------|--------------5-|----------------|--------10p(b9)8---|
Eb|0000000000000000|00000000----0---|0000000000000000|00000000---------|
P.M................ ........    .    ................ ........
              RightGtr slides quickly down (Ab?) string here---^

Both Gtrs play Riff B 4x with lyrics:

  Body that rest before me
  With every dying breath
  Spellbound and gagged
  I commence your flesh to dirt

Both Gtrs play Riff A 4x
Both Gtrs play Riff B 4x with lyrics:

  Body that lay before me
  In everlasting death
  Entombed in abscess
  To rot and lie stinking in the earth

Both Gtrs play Riff A 3x followed by

Gb|----------------|---------|
Db|(b9)--------------|2:-------|
Ab|7-------5---4---|4:-rest--|
Eb|--8-7-0-3---2---|---------|
P.M  . . .

Riff C
Gb|----------------|----------------|
Db|----4-----4---|----------------|
Ab|--0-2-----2
---|----------------|
Eb|0-----2-3-----0-|0000000000000000|
P.M. .   . .     .  ................

Left Gtr plays Riff C 6x while Right Gtr solos

Riff D
                     /-- 1,3 ---------/-- 2 -----------/-- 4 ----------
Gb||-----------------|----------------||----------------||----------------|
Db||*----4-----4---|---------------*||--------5----*||--6---5-----|
Ab||*--0-2-----2
---|---------------*||--------3-4/5*||--4---3-4/5-|
Eb||-0-----2-3-----0-|0-0-0-0-0-0-0-0-||0-0-0-0-----2/3-||0-----0-----2/3-|
P.M  . .   . .     .  . . . . . . . .   . . . .           .     .

Both Gtrs play Riff D 2x with lyrics:

  Empty altar awaits its victim
  Stained glass windows black
  Candles burn the midnight oil
  Incense fills the night

  Observing trance awakening state
  Lying still unknowing
  Reciting the passages of time
  Prepare for the impaling

Then both Gtrs play the following interlude:
Gb|--------------|------------|------------|-----------|
Db|3:--------5-4-|--------5-6-|--------5-4-|2:-----3-2-|
Ab|4:----5-6-----|----5-4-----|----5-6-----|4:-3-4-3-2-|
Eb|--------------|------------|------------|---3-4-----|

Gb|--------------|------------|------------|
Db|3:--------5-4-|--------5-6-|--------5-4-|
Ab|4:----5-6-----|----5-4-----|----5-6-----|
Eb|--------------|------------|------------|

Right Gtr plays Riff D 2x while Left Gtr solos

Riff E1
Gb|--------------|------------|-----------|
Db|3:----5-4-----|----4-3-----|2:-----2-1-|
Ab|4:--------5-4-|--------4-3-|4:-2-3-2-1-|
Eb|--------------|------------|---2-3-----|

Riff E2
Gb|--------------|------------|-----------|
Db|3:------------|------------|2:-----2-1-|
Ab|4:----5-4-----|----4-3-----|4:-2-3-2-1-|
Eb|----------5-4-|--------4-3-|---2-3-----|

Both Gtrs play Riff E1
Left Gtr plays Riff E1 while Right Gtr plays Riff E2
Both Gtrs play Riff E1 2x

Then some very cool riffery:
Gb|--LeftGtr-----|----8-7-----|------------|---5-4-----|
Db|3:----6-5-----|--------8-7-|----6-5-----|2:-----5-4-|
Ab|4:--------6-5-|------------|--------6-5-|4:---------|
Eb|--------------|------------|------------|-----------|
  |              |            |            |           |
Gb|--RightGtr----|----8-7-----|------------|---5-4-----|
Db|3:----6-5-----|--------8-7-|----6-5-----|2:-----5-4-|
Ab|4:--------6-5-|------------|--------6-5-|4:---------|
Eb|--------------|------------|------------|-----------|

Gb|--LeftGtr-----|----8-7-----|------------|---5-4-----|
Db|3:----6-5-----|--------8-7-|----6-5-----|2:-----5-4-|
Ab|4:--------6-5-|------------|--------6-5-|4:---------|
Eb|--------------|------------|------------|-----------|
  |              |            |            |           |
Gb|--RightGtr----|----8-7-----|------------|---8-7-----|
Db|3:----6-5-----|--------8-7-|----6-5-----|2:-----8-7-|
Ab|4:--------6-5-|------------|--------6-5-|4:---------|
Eb|--------------|------------|------------|-----------|

Gb|--LeftGtr-----|------------|------------|-----------|
Db|3:----6-5-----|----8-7-----|----6-5-----|2:-5-4-----|
Ab|4:--------6-5-|--------8-7-|--------6-5-|4:-----5-4-|
Eb|--------------|------------|------------|-----------|
  |              |            |            |           |
Gb|--RightGtr----|----8-7-----|------------|---5-4-----|
Db|3:----6-5-----|--------8-7-|----6-5-----|2:-----5-4-|
Ab|4:--------6-5-|------------|--------6-5-|4:---------|
Eb|--------------|------------|------------|-----------|

Gb|--LeftGtr-----|----8-7-----|------------|
Db|3:----6-5-----|--------8-7-|----6-5-----|
Ab|4:--------6-5-|------------|--------6-5-|
Eb|--------------|------------|------------|
  |              |            |            |
Gb|--RightGtr----|----8-7-----|------------|
Db|3:----6-5-----|--------8-7-|----6-5-----|
Ab|4:--------6-5-|------------|--------6-5-|
Eb|--------------|------------|------------|

Both Gtrs play Riff D 2x with lyrics:

  Death's an art, flesh and earth never part
  A power of the mind
  Death shines on the air of silence
  A ritual of endless time

  Purged of your dead body
  Sacrificed of your life
  Unearthly ritual sealed in fire
  Enter the kingdom of desire.

However, the second time through the pattern, substitute the following
for the 4th repeat (both Gtrs):
Gb|----------------|----------------|
Db|----4-----4---|--5-5---4-------|
Ab|--0-2-----2
---|003-3-0-2----5--|
Eb|0-----2-3-------|-------------3--|
P.M. .   . .                     .

Then replay the intro pattern (both Gtrs):
Tempo back to 145 bpm
Gb|----------------|----------------|----------------|
Db|----------------|----------------|----------------|
Ab|4-------------5-|4-------------5-|4-------------5-|
Eb|2-------------3-|2-------------3-|2-------------3-|
P.M              .                .                .

Tempo changes back to 220
Gb|-LeftGtr--------|----------------|
Db|----------------|----------------|
Ab|4-------5---4---|--------14\|
Eb|2-------3---2---|--------12\|
  |                |                |
Gb|-RightGtr-------|----------------|
Db|(b9)--------------|7-------6(b9)----|
Ab|7-------5---4---|5-------4/7-----|
Eb|--8-7-0-3---2---|--000000----0000|
P.M  . . .            ......    ....

Riff F
Gb|----------------|----------------|
Db|----------------|7-------6-------|
Ab|----------------|5-------4-------|
Eb|0000000000000000|--000000--000000|
P.M................   ......  ......

Left Gtr plays Riff F 6x while Right Gtr solos
then Left Gtr plays last half of Riff F while Right Gtr solos
Song ends on this bar, while King's lead ends:
Gb|----------------|
Db|(b9)--------------|
Ab|7-------5---4---|
Eb|--8-7-0-3---2---|
P.M  . . .