Tuning (low to high): DGDGBE. Key of C. 
Tabbed by: Cuff
Artist: Soundgarden
Album: Superunknown
Song: Superunknown
Intro Riff: 

                     Play 4 times
E||-----------||-------------------------||
B||-----------||o------0-----0----------o||
G||--3h5p3p0--||o----3-----0---3h5p3p0--o||
D||-----------||---5-----3---------------||
This is the dominating riff for the verses: 
G||-----------||-----------------------||
D||-----------||------0-----0----------||
G||--3h5p3p0--||----0-----0---3h5p3p0--||
D||-----------||--5-----3--------------||
There's a part in the first verse where the riff moves up 1 string and then comes back. 
There's this other riff in the verse: 

G||---------------4--|--4--4-4--4-4-4--|--42--2-2-2--2-2--|
D||o--5--5-5--5-5-5--|--5--5-5--5-5-5--|--53--3-3-3-------|
G||o-----------------|-----------------|-------------------|
D||---5--5-5--5-5-5--|--5--5-5--5-5-5--|--53--3-3-3-------|

G||--2p0---0---0---||
D||------3--------o||
G||---------------o||
D||----------------||
To break into the chorus play the verse riff a couple of times and then: 
G||-----------|------0-----0------|--0-----0----------|
D||--3h5p3p0--|----0-----0-----0--|------0-------0----|
G||-----------|--5-----3-----2----|----3-------0------|
D||-----------|-------------------|----------3-----2--|

G||------------||
D||----0-------||
G||--0---------||
D||------0-----||
Chorus riff: 
                              Play 4 times
G||-------------------|-------------------||
D||o--65-5-5-5--5-3--|--5-6-5-3--3-3-x--o||
G||o------------------|---------------x--o||
D||---65-5-5-5--5-3--|--5-6-5-3--3-3-x---||

Riff 1:
G||-------------------|-------------------||
D||--5-5-5-5-5-5-5-5--|--3-3-3-3-3-3-3-3--||
G||-------------------|-------------------||
D||--5-5-5-5-5-5-5-5--|--3-3-3-3-3-3-3-3--||

G||-----------|-----------|-----------|-------3-5-3-0--||
D||--3--2--0--|--3--2--0--|--3--2--0--|--3--2----------||
Then the solo comes and then the verse again, but this time you don't move the riff a string upwards. This way, the prechorus riff comes about 4 bars before. Play the chorus as usual. 
The interlude riff is as follows: 

                      Play 6 times
G||---------0-0-0--|--------0-0---||
D||o------3--------|------3------o||
G||o---------------|-------------o||
D||---0h3----------|--0h3---------||
Then comes the main solo with the chorus riff as rhythm. Play 4 times. Then play riff 1 4 times when the "Alive" singing comes. Then repeat the end of the chorus 3 times and end with: 
G||-----------|------0-----0------|--0-----0----------|
D||--3-5-3-0--|----0-----0-----0--|------0-------0----|
G||-----------|--5-----3-----2----|----3-------0------|
D||-----------|-------------------|----------3-----2--|

D||----0-------
G||--0---------  hold note until end.
D||------0-----