Artist: Cold
Song: Happens All the Time
Track: 6
Album: A Different Kind of Pain

Legend:

h - hammer-on
p - pull-off
<#> harmonic/volume swell - see performance notes
d - decrescendo/fade out
/ - slide up or slide down
// - "hammer-slide"

Tuning, Guitar 1 (Matt): Straight C (C, F, A#, D#, G, C)
Tuning, Guitar 2 (Scooter/Mike): Straight C (C, F, A#, D#, G, C)

Intro, Guitar 1, distortion

C |---------------------------------------------------------------------------|
G |---------------------------------------------------------------------------|
D#|---------------------------------------------------------------------------|
A#|-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-9-9-9-9-9-9-9-9-9-9-9-9-9-|
F |---------------------------------------------------------------------------|
C |---------------------------------------------------------------------------|

C |----------------------------------------------------------------------------------------------------|
G |----------------------------------------------------------------------------------------------------|
D#|----------------------------------------------------------------------------------------------------|
A#|-9-9-9-10p9----------------------------------------------------------------------------//12-10-<9>--|
F |------------10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-10-9-9-9-9-9-9-9-9-9-9-9-9-9-9-------------|
C |----------------------------------------------------------------------------------------------------|

Note: the harmonic is a volume swell into the chorus.  On the repeat, continue playing 9
on the F string, then play the harmonized 9 on the A# with a volume swell or with a whammy bar.

Intro, Guitar 2, distortion, let ring

At :06, play a C5, as so:

C |-
G |-
D#|-
A#|2~
F |2~
C |0~

Chorus, Guitars 1 and 2, distortion

Note: the strumming is essentially in time with Sam's bass drum.
Down, down, down-up, up, down...

C |-----------------------------|--------------------------------------------|
G |-----------------------------|--------------------------------------------|
D#|----------7-----5------------|---------7-----5----------------------------|
A#|----5-----7-----5------------|---5-----7-----5----------------------------|
F |----5-----5-----3---2/3/2p0--|---5-----5-----3----------------------------|
C |----3------------------------|---3----------------------------------------|

Bridge, Guitar 1, distortion

C |--------------------------------|-----------------------------------------|
G |--------------------------------|-----------------------------------------|
D#|-----------------------14/16/14-|----14/16/14------14/16/14------14/16/14-|
A#|--2----4----5----7------x/-x/-x-|-2---x/-x-/x---4---x/-x/-x---5---x/-x-/x-|
F |--2----4----5----7-----12/14/12-|-2--12/14/12---4--12/14/12---5--12/14/12-|
C |--0----2----3----5--------------|-0-------------2-------------3-----------|

Guitar 2, clean, ring out

C |-------0-----------0-----------0------------0-----0-----------------------|
G |----------0-----------0-----------0------------7-----7h9~~----------------|
D#|--------------------------------------------------------------------------|
A#|--------------------------------------------------------------------------|
F |----2-----------4-----------5-----------7---------------------------------|
C |-0-----------2-----------3-----------5------------------------------------|

While the 9 on the G is ringing, Guitar 1 plays this at approximately 2:20:

C |----------------------------|
G |----------------------------|
D#|----------------------------|
A#|--7---7---6-7---9-----------|
F |--7---7---6-7---9-----------|
C |--5---5---4-5---7-----------|

Let the G5 ring with the ringing 9 on the G from Guitar 2.

Outro chorus, both guitars, distortion:
Strumming is again more or less in line with Sam's percussion
Down, down, down-up, up, down, down, down, down-up...

C |----------------|----------------|
G |----------------|----------------|
Eb|---5-------7----|---5-------7----|
Bb|---5---5---7----|---5---5---7----|
F |---3---5---5----|---3---5---5----|
C |-------3--------|-------3--------|

Repeat until final measure:

C |-----------------------------------------|
G |-----------------------------------------|
D#|-----------------------------------------|
A#|---7---9---2d----------------------------|
F |---7---9---2d----------------------------|
C |---5---7---0d----------------------------|

There you have it.  I admit that the strumming is likely a bit faulty,
but hopefully you can use it as a guide while listening to the song.