I got to chapter 8 before (then had to restart because I updated to 3.0 without backing up my ipod...) and as far as I could tell what was there was extremely similar to the Gamecube version, especially how to beat the bosses.
Because of the similarity, I have some understanding on how to kill it. There should be 4 bells around the cage in which you fight. Since it's attracted by sound, shooting the bells away from you. This will send him running at that bell, eventually lodging himself into the wall with his claws. When this happens, throw a grenade at him and just open fire. After a time, a thing will pop out of his back similar to the El Gigante fight. Just do the same thing of shooting at it. After a few times (I forgot the exact amount) the fight will be over.