This tab is based off of Spudnik16's tab with adjustments that sound correct to me.
Play Riff 1x8
Play Riff 2x4
Play Riff 1x4
Play Riff 2x3 then play Riff 3 (Same Riff as Riff 2 with an open A chord on the end)
Play Riff 4x4
Play Riff 5x1
Play Riff 2x4
Play Riff 6x1
Play Riff 7 followed by Riff 8 three times
Then Riff 7 followed by Riff 9 two times
Then Rill 10x1
Play Riff 11x5 and end on the A chord strummed twice
Riff 1
|------------------------------------------------|
|------------------------------------------------|
|-------------0h2p0------------------------------|
|-------0h2h3---------------2-2-----------0h2----|
|-0h2h3-----------------------------0h2h3--------|
|---------------------3-1-1-----1-3--------------|
Riff 2
|-------------------------------------------|
|-------------------------------------------|
|-2---2----------------/5-4--/9-7--5p4------|
|-2-5-2-------0h2-3p0------------------5----|
|-0-5-0-0h2h3-------------------------------|
|---3---------------------------------------|
Riff 3
|----------------------------------------------|
|----------------------------------------------|
|-2---2----------------/5-4--/9-7--5p4----2----|
|-2-5-2-------0h2-3p2------------------5--2----|
|-0-5-0-0h2h3-----------------------------0----|
|---3------------------------------------------|
Riff 4
|--------------------------------------------|
|--------------------------------------------|
|-(2)-----------------(2)--------------------|
|------------2-2------------------2-2--------|
|----(0)---3-----0-0------(0)---3-----0-0----|
|--------1--------------------1--------------|
Riff 5
Pick Scrape after striking this F chord
|--------------------------|
|--------------------------|
|-(2)----------------------|
|------------2-2-----------|
|----(0)---3-----0-0--3----|
|--------1------------1----|
[ Tab from: http://www.guitaretab.com/t/the-party-of-helicopters/327918.html ]
Riff 6
Palm Mute this G chord
|-----------------------------------|
|-----------------------------------|
|----------------2------------------|
|-------0h2-3p2--0------------------|
|-0h2h3----------0--7--5-5-5-5-5----|
|-------------------5--3-3-3-3-3----|
Riff 7
|--------------------------------------------|
|-------3-0---------------------3------------|
|----2------2-0---2-0-------0-2---2p0--------|
|----2----------2-----2-0-2-----------2p0----|
|-7--0---------------------------------------|
|-5------------------------------------------|
Riff 8
|------------------------------------|
|------------------------------------|
|------------------------------------|
|-----2-0-----2-0-----2-0-----2-0----|
|------------------------------------|
|-3-3-----3-3-----3-3-----3-3--------|
Riff 9
|-----------------------------------------|
|-----------------------------------------|
|-----------------0-------0---------------|
|-----2-0-----2-0---2-0-2---2-0-2--0-2----|
|-----------------------------------------|
|-3-3-----3-3-----------------------------|
Riff 10
|------------------------------------------------------------|
|-------3-0---------------------3-0h3-----0h3-----3-3-3-3----|
|----2------2-0---2-0-------0-2-------2p0-----2p0-2-2-2-2----|
|----2----------2-----2-0-2-----------------------0-0-0-0----|
|-7--2-------------------------------------------------------|
|-5----------------------------------------------------------|
Riff 11
|-------------------------------------------------|
|-------------------------------------------------|
|-----5--5-----5--5-----5--5-5S7-7-7-7-7-7S5-5----|
|-----3--3-----3--3-----3-------------------------|
|-7-7------7-7------7-7----3-3S5-5-5-5-5-5S3-3----|
|-5-5------5-5------5-5---------------------------|
Riff 12
|------------------------------------|
|------------------------------------|
|-------------------------5-7-5-4----|
|---------5-5-5-5--------------------|
|-5-5-5-5-3-3-3-3-5-5-5-5-3-5-3-2----|
|-3-3-3-3---------3-3-3-3------------|