This could be done on a 5-string, that's how I do it;  but it's easier on a 6-string.

Main riff  (in the intro for improv, move 1 fret higher)
C|------------0------0------0-|
G|-17p14----------------------|
D|-14-------------------------|
A|----------------------------|
E|----------------------------|
B|------13\-3/-13\-3/-13\-3/--|

Chorus/solo riff
C|-2-----------|-------------|
G|-2-----------|-5-----------|
D|-------------|-5-----------|
A|-------------|-------------|
E|-------5-----|-------3-----|
B|---7-5---7-5-|---5-3---5-3-|

Last time
C|-3-3---------------------|
G|-3-3---------------------|
D|-------------------------|
A|-------------1-1---------|
E|-----3-3-1-1-----3-3-1-1-|
B|-------------------------|

Improv during quiet solo
C|---------------------------------|
G|-17-17-18-18-17\-14-15-14-15-17\-|
D|-14-14-15-15-14\-12-13-12-13-14\-|
A|---------------------------------| x1
E|---------------------------------|
B|---------------------------------|

There ya have it. Odd song with odd time signature.