This is the song, for the most part.
INTRO
Guitar one
e|-22-33-55--22-33-55-------------------------------------------------------|
B|-22-22-22--22-22-22-------------------------------------------------------|
G|--------------------------------------------------------------------------|
D|--------------------------------------------------------------------------|
A|--------------------------------------------------------------------------|
E|--------------------------------------------------------------------------|
Guitar two
e|--------------------------------------------------------------------------|
B|--------------------------------------------------------------------------|
G|--------------------------------------------------------------------------|
D|--------------------------------------------------------------------------|
A|-7------------------------------------------------------------------------|
E|-5------------------------------------------------------------------------|
Guitar One
e|-22-33-55--22-33-22-5-2--------||
B|-22-22-22--22-22-22-2-2--------||
G|------------------------------o||
D|------------------------------o||
A|-------------------------------||
E|-------------------------------||
[ Tab from: https://www.guitartabs.cc/tabs/a/alkaline_trio/mercy_me_tab_ver_4.html ]
Guitar two
e|-------------------------------||
B|-------------------------------||
G|------------------------------o||
D|-----------7------------------o||
A|-4---------5-------------------||
E|-2-----------------------------||
VERSE
e|---------------------------------------------------||
B|---------------------------------------------------||
G|--------------------------------------------------o||REPEAT 3 TIMES(ONCE
D|-----7-----7-----7-----7-----7-----7-----7-9-9-9--o||FOR SECOND VERSE)
A|---------------------------------------------------||
E|-5-5---5-5---5-5---5-5---5-5---5-5---5-5---7-7-7---||
e|--------------------------------------------------------------------------|
B|--------------------------------------------------------------------------|
G|--------------------------------------------------------------------------|
D|-----7-----7-----7-----7---7-7-9-9-1111111112-12-12-12-11119-9------------|
A|--------------------------------------------------------------------------|
E|-5-5---5-5---5-5---5-5-----5-5-7-7-9-9-9-9-10-10-10-10-9-9-7-7------------|
BRIDGE
e||----------------------------------------||-----------------------------||
B||----------------------------------------||-----------------------------||
G||o----------77777777----------99999999--o||o-11111111-9999-77777777----o||
D||o-44444444-77777777-77777777-99999999--o||o---------------------------o||
A||--44444444-55555555-77777777-77777777---||--9-9-9-9--7777-55555555-----||
E||--22222222----------55555555------------||-----------------------------||
I'm pretty sure that's how you play it. If you have any questions, contact me
at the_coroner@sbcglobal.net or for AIM at dr00z0rz.