This is the portal ending song

VERSE:
D Bm D Bm
D Bm D Bm
G A7
D Bm D Bm
D Bm D Bm
D Bm D Bm
G A7
Bb
CHORUS:
F C Bb F
F C Bb F
Bb C F C Dm
Bb A7
D Bm D Bm

Or:
D Bm D
This was a triumph
Bm D
I'm making a note here
Bm D Bm
HUGE SUCCESS
G A7 D Bm D
It's hard to overstate my satisfaction
Bm D Bm D
Aperture Science
Bm D Bm D Bm
we do what we must because we can
G A7 Bb
for the good of all of us except the ones who are dead
F C Bb F
but there's no sense crying over every mistake
F C Bb F
you just keep on trying until you run out of cake
Bb C F C Dm
and the science gets done and you make a neat gun
Bb A7
for the people who are still alive


The Fingerpicking is on the G, B, and E strings, it's reasonably easy to figure out. For 
and Bm, just use xxx232 and xxx432. G is xxx433 and A7 is xxx223.