Ok after about an hour of work I'd say, here's my Castaway tab. Pay
 attention to the patterns of the strumming and stuff. That's all I've
 got to say.

 Legend
 x - scratch
 b - bend
 ~ - let ring
 % - rest

  Intro/Main riff (x4)
 |---------|---------------------------------------------------------------|
 |---------|---------------------------------------------------5--5---5----|
 |-x-x-x-x-|-5---x-5---x-5--x-x--------------------------------5--5---5-0--|
 |-x-x-x-x-|-5-%-x-5-%-x-5-%x-x-7--7--x-0--3---x-3---x-3--x-x--5--5---5-0--|
 |-x-x-x-x-|-3---x-3---x-3--x-x-7--7--x-0--3-%-x-3-%-x-3--x-x--3--3---3-0--|
 |---------|--------------------5--5--x-0--1---x-1---x-1--x-x--------------|
 |
 |Modification 1 (replaces 4th bar of intro)
 |------------------------------------------------------------|
 |------------------------------------------------5--5---5----|
 |-5---5-5---5-5---0------------------------------5--5---5-0--|
 |-5---5-5---5-5---0-7--7--7--3---3-3---3-3--x-x--5--5---5-0--|
 |-3---3-3---3-3---0-7--7--7--3---3-3---3-3--x-x--3--3---3-0--|
 |-------------------5--5--5--1---1-1---1-1--x-x--------------|
 |
 |Modification 2 (replaces 3rd bar after 2nd chorus)
 |-------------------------------------------------------------|
 |-------------------------------------------------5--5---5----|
 |-5---x-5---x-5-----------------------------------5--5---5-0--|
 |-5-%-x-5-%-x-5-%-7--7--7--7--3---x-3---x-3--x-x--5--5---5-0--|
 |-3---x-3---x-3---7--7--7--7--3-%-x-3-%-x-3--x-x--3--3---3-0--|
 |-----------------5--5--5--5--1---x-1---x-1--x-x--------------|
 |
 |Modification 3 (replaces last bar of song)
 |-----------------------------------------------------------|
 |---------------------------------------------------5--5----|
 |-5---x-5---x-5--x-x--------------------------------5--5----|
 |-5-%-x-5-%-x-5-%x-x-7--7--x-0--3---x-3---x-3--x-x--5--5-~--|
 |-3---x-3---x-3--x-x-7--7--x-0--3-%-x-3-%-x-3-%x-x--3--3----|
 |--------------------5--5--x-0--1---x-1---x-1--x-x----------|

  Verse (x4)
 |---------------------------------------------------------------|
 |---------------------------------------------------5--5---5----|
 |-5---x-5---x-5--x-x--------------------------------5--5---5-0--|
 |-5-%-x-5-%-x-5-%x-x-5--5--x-0--3---x-3---x-3--x-x--5--5---5-0--|
 |-3---x-3---x-3--x-x-5--5--x-0--3-%-x-3-%-x-3--x-x--3--3---3-0--|
 |--------------------3--3--x-0--1---x-1---x-1--x-x--------------|

  Pre-chorus (x2)
 |------------------------------------------------------------------------|
 |------------------------------------------------------------------------|
 |------------------------------------------------------------------------|
 |-3---3--3---3--3---3---3--3---3--3---3---3--3---3--3---3---3--3---3--3--|
 |-3---3--3---3--3---3---3--3---3--3---3---3--3---3--3---3---3--3---3--3--|
 |-1---1--1---1--1---1---1--1---1--1---1---1--1---1--1---1---1--1---1--1--|
  _______________________________________________________________
 | 1.
 |------------------------------------------------------------------|
 |------------------------------------------------------------------|
 |-5---5--5---5--5---x-x--4--5--0---5---5--5---5--5---x-x--4--5--0--|
 |-5---5--5---5--5---x-x--4--5--0---5---5--5---5--5---x-x--4--5--0--|
 |-3---3--3---3--3---x-x--2--3--0---3---3--3---3--3---x-x--2--3--0--|
 |------------------------------------------------------------------|
  _______
 |2.
 |-------|
 |-------|
 |-------|
 |-5-----|
 |-5-~---|
 |-3-----|

  Post chorus
 |-------------------------------------------------|
 |-------------------------------------------------|
 |-------------------------------------------------|
 |-3-----------------------5-----------------------|
 |-3-~---------------------5-~---------------------|
 |-1-----------------------3-----------------------|
 |
 |Modification 1 (replaces final post chorus)
 |-------------------------------------------------|
 |-------------------------------------------------|
 |-------------------------------------------------|
 |-3--3--3--3--3--3--3--3--5--5--5--5--5--5--5--5--|
 |-3--3--3--3--3--3--3--3--5--5--5--5--5--5--5--5--|
 |-1--1--1--1--1--1--1--1--3--3--3--3--3--3--3--3--|

  Guitar solo
 |-----------------|----3-3---3-3-------3-3---3-3---6p3---6p3---6p3--------|
 |-----------------|----3-3---3-3-------3-3---3-3-------3-----3-----3--6b--|
 |-x-x-x-x-x-x-x-x-|-5b-------------3h4------------------------------------|
 |-x-x-x-x-x-x-x-x-|-------------------------------------------------------|
 |-x-x-x-x-x-x-x-x-|-------------------------------------------------------|
 |-----------------|-------------------------------------------------------|

  End of bass solo
 |-----------------|
 |-----------------|
 |-x-x-x-x-x-x-x-x-|
 |-x-x-x-x-x-x-x-x-|
 |-x-x-x-x-x-x-x-x-|
 |-----------------|

 Order
 Main riff
 Verse
 Pre chorus
 Main riff
 Post chorus
 Main riff
 Verse
 Pre chorus
 Main riff
 Post chorus
 Main riff
 Guitar solo
 
 End of bass solo
 Pre chorus
 Main riff
 Post chorus
 Main riff