Requires about 6.5Gb of space. Confirmed to be working.

1. Download the torrent (includes Ghost Recon, Desert Siege and Island Thunder expansion packs) from here: http://torrentz.eu/31c96a6c165e2549b1395ef83bbfbf77c1de29d3
2. Download the Heroes Unleashed mod from here: http://www.moddb.com/mods/heroes-unleashed/downloads/heroes-unleashed-v100b6-full-install-for-pc
3. Install Ghost Recon and both expansions.
4. Patch it to 1.3 and then to 1.4 (files are located on the GRecon.iso image).
5. Extract Heroes Unleashed mod to the /Mods subfolder.
6. Launch the game and enable the mod in the Options->Mods menu (make sure the order is the following: Desert Siege, Island Thunder, Heroes Unleashed).
7. Restart the game and enjoy all the new awesome things.