My tuning: C#
Riff 1a (tremolo)
C#|----------------------------------------------|
G#|----------------------------------------------|
E |----------------------------------------------|
B |--4444-66-77-4444-66-77-7777-66-77-7777-66-77-|
F#|--2222-44-55-2222-44-55-5555-44-55-5555-44-55-|
C#|----------------------------------------------|
Riff 1b (tremolo) (0:11)
|----------------------------------------------|
|----------------------------------------------|
|----------------------------------------------|
|--4444-66-77-4444-66-77-7777-66-77-777777-99--|
|--2222-44-55-2222-44-55-5555-44-55-555555-77--|
|----------------------------------------------|
Riff 2 (tremolo) (1:10)
[ Tab from: http://www.guitaretab.com/j/judas-iscariot/57660.html ]
|-----------------------------------------|
|-----------------------------------------|
|-----------------------------------------|
|-----------------------------------------|
|--99999999-55555555-99999999-7777-55-88--|
|--77777777-33333333-77777777-5555-33-66--|
Riff 3 (2:43)
|-------------------------------------|
|--3-3-3-3-3-3-3-3-3-5-5-5-5-5-5-8-8--|
|--4-4-4-4-4-4-4-4-4-6-6-6-6-6-6-9-9--|
|-------------------------------------|
|-------------------------------------|
|-------------------------------------|
Riff 4 (3:33) (listen for correct rhythm)
|-------------------------------------------|
|-------------------------------------------|
|--7----7----7----7-------------------------|
|--7----8----7----8----8----8----8----8-----|
|----------------------8----7----8----7-----|
|-------------------------------------------|