The intro is moderatly fast, so it is only intermediate if you are fast.  Otherwise its advanced.
p=pull off   h=hammer on  r= let it ring  -=beat  WD=wammy dive /=slide
Q=quiet
~=bend back and forth
|--------------------------------------------------------------|
|-12p-0-0-10p-0-0-8p-0-0-10p-0-0-12p-0-0-10p-0-0-8p-0-0-10p-0-0|
|--------------------------------------------------------------|
|--------------------------------------------------------------|
|--------------------------------------------------------------|
|0(WD)---------------------------------------------------------|

|--------------------------------------------------------------|
|12p-0-0-10p-0-0-(8p-0-0-10p-0-0-8p-0-0-10p)X2-12p0------------|
|--------------------------------------------------------------|
|--------------------------------------------------------------|
|--------------------------------------------------------------|
|--------------------------------------------------------------|
Repeat the two phrases above.
|--------------------------------------------------------------|
|-12p-0-0-10p-0-0-8r--0-8-10-11-12p-0-0--10p-8r--0-8-10-12-12--|
|--------------------------------------------------------------|
|--------------------------------------------------------------|
|--------------------------------------------------------------|
|--------------------------------------------------------------|

|--------------------------------------------------------------|
|-12-8p-0-0-10p-0-0-8p-0-0-10p-0-0-8p-0-0-10p-0-0-10-11-12-----|
|--------------------------------------------------------------|
|--------------------------------------------------------------|
|--------------------------------------------------------------|
|--------------------------------------------------------------|

|----------------------17---------------------12---------------|
|-12p-0-0-10-0-0-8r--8-17-12p-0-0-10-0-08r--8-12---------------|
|--------------------------------------------------------------|
|--------------------------------------------------------------|
|--------------------------------------------------------------|
|--------------------------------------------------------------|

|--------------------------------------------------------------|
|-8p-0-0-10p-0-0-8p-0-0-10p-0-0-8p-0-0-10p-0-0-12p-0-0-10p-0-0-|
|--------------------------------------------------------------|
|--------------------------------------------------------------|
|--------------------------------------------------------------|
|--------------------------------------------------------------|
This next part you have to do a little faster.
|--------------------------------------------------------------|
|12p-0-0-10p-0-0-8r-8-10p-8-8-10p-8-8/-15Q-15~-----------------|
|--------------------------------------------------------------|
|--------------------------------------------------------------|
|--------------------------------------------------------------|
|--------------------------------------------------------------|
Play this next phrase very fast.
|--------------------------------------------------------------|
|8p-0-0-10p-0-0-8p-0-0-10p-0-0--15-14-12-10-12p-10/-8-10-12-8--|
|-----------------------------12-------------------------------|
|--------------------------------------------------------------|
|--------------------------------------------------------------|
|--------------------------------------------------------------|

|--------------------------------------------------------------|
|-12p-0-0-10p-0-0-8p-0-0-10r-12p-0-0-10p-0-0-8p-0-0-8r---------|
|--------------------------------------------------------------|
|--------------------------------------------------------------|
|--------------------------------------------------------------|
|--------------------------------------------------------------|
The next phrase is the last to the intro, and also is extremely fast.
|---------------------------------------19~~~~~~~~~~~~~~~~~~~~~|
|---------------17/-11/-12p-0-h12-13-14-17~~~~~~~~~~~~~~~~~~~~~|
|-12/-13/-14/-15-----------------------------------------------|
|--------------------------------------------------------------|
|--------------------------------------------------------------|
|--------------------------------------------------------------|

And there you go, the intro.  Have fun.