Easy way to kill "The Destroyer" final boss.
Right, there's no doubt for any of you game lovers that this final boss battle can be very tricky to pull off. So Here's an easier way to avoid throwing your controller at the T.V.
Use a strong sniper rifle equiped with fire or explosion capability.
Carry at least 3-4 full health packs.
Keep hold of Sledge''s shotgun, (GO BACK AND KILL HIM AGAIN TO GET THIS HE'S IN THE MINES LEVEL)
Carry lots of shotgun ammo.
At the start, quickly take out the tenticles with the sniper rifle running left and right to avoid the projectiles, then hurry right up to the top left and get as close to the boss as you can, get out Sledge's shot gun, this gun is extreamily powerful close up, the best in the game.
Start shooting away at the body bottom of the boss,
Now if you do this quickly enough the boss should grow some extra large mass at the base, if you are close enough still then this mass will protect you against the projectiles from the tenticles. Keep on using the shotgun at the body when your right up against it, crouch also for extra protection.
You will be able to off load around 60 rounds of shotgun into the body (forget about the eye) doing this will take a bit of health off each time and eventually it will die and you will be relieved!
Have fun,
Regards.... The Judge.