Tricky song, worked it out by ear as best I could. Riff C isn't right but it fits I guess.

E standard tuning
Riff A (x12)
G|-----------------------------|
D|----9-5~~5-4-----------------|
A|-------------5~~4/9~~9-7-7p5-|
E|-7~~-------------------------|
Riff B (x8)
G|--------------------------------|
D|-------------------------5-4----|
A|---------------5~~5-5-7~~----54-|
E|-0-00-2-3~~3-3------------------|
Repeat Riff A (x8)
Riff C (repeat until fade)
G|-------------------------|
D|-9-----5-----5-55--4-----|
A|-----5-----5-----4---5-4-|
E|---7-----7---------------|