Ok this song is mainly comprised of one riff with a slight variation each time.
Drop D Tuning
Intro:
e|------------------------------------|
B|------------------------------------|
G|------------------------------------|
D|------------------------------------|
A|3-5-3-5--3-5-3-5--3-5-3-5--3-5-3-5--|
D|------------------------------------|
Hold every second 5 slightly longer.
After this plays for a few bars it changes to:
e|-----------------|
B|-----------------|
G|-----------------|
D|---------3-5-----|
A|3-5-3-5------3-5-|
D|-----------------|
You play this riff through the whole verse.
We then hit the chorus:
[ Tab from: https://www.guitartabs.cc/tabs/n/nine_inch_nails/1000000_tab.html ]
e|------------------------------------|
B|------------------------------------|
G|------------------------------------|
D|55555555-33333333----------3-5------|
A|55555555-33333333-3-5-3-5------3-5--|
D|55555555-33333333-------------------|
e|---------------------------------------------|
B|---------------------------------------------|
G|---------------------------------------------|
D|55555555-33333333---------------3-5----------|
A|55555555-33333333-3-5-3-5-00000-----3-5---00-|
D|55555555-33333333---------00000-----------00-|
Palm mute all the zeros to get that chugging sound. Listen to the song to get the rhythm.
That's really it! There's a few high pitched sounds that I believe are synths but if
works them out feel free to PM me the correction and I'll add it in.
Enjoy!