PSD is available as an additional download which you can tweak as you need. You can also use this to disable the AO if you will be doing that externally.
Item is very low poly. The cap on either end of the cylinder's are N-Gons but can be triangulated easily or Quad'ed with a little bit of work, otherwise it's all clean Quad polygons.
Map is all UV-Unwrapped, with 95% being non-overlapping, small overlap on areas you cannot see (inside of the axe where handle passes through) so is safe for shadow baking. With this in mind it should be fully game engine ready if that is your plan and your engine accepts quad polygon meshes (rather than tri)