The tuning is drop D.
(to drop D,play fret 7 on 6th string and match sound with 5th string open)

The main chords throught the song.

Pt.1
|--------------------|
|--------------------|
|--------------------|
|--------------------|
|--12--5-5--9-9--7-7-|
|--12--5-5--9-9--7-7-|

Pt.2
|-------------------------|
|-------------------------|
|-------------------------|
|-------------------------|
|-12--5-5--9-9-7-7-5-5-7--|
|-12--5-5--9-9-7-7-5-5-7--|




I also made this up:
SKILL TESTER                                         (~ = cnt'd.)
                              >Play really fast<
|-------------------------------------------------------------------------~
|-------------------------------------------------------------------------~
|-------------------------------------------------------------------------~
|-------------------------------------------------------------------------~
|--12-0-0-12-0-0-12-0-0-12-0-0-12-0-0--10-0-0-10-0-0-10-0-0-10-0-0-10-0-0-~
|-------------------------------------------------------------------------~

~------------------------------------------------------------------|
~------------------------------------------------------------------|
~------------------------------------------------------------------|
~------------------------------------------------------------------|
~--8-0-0-8-0-0-8-0-10-0-0-8-0-0-0-0--7-0-0-8-0-0-7-0-0-8-0--7-8-7--|
~------------------------------------------------------------------|