first u need to get everything in the house then you go upstairs, than mendez will attack
you and before you his plaga you will be able to listen to a strange noise, thats the sign
when you hear this jump down and knife him when he come back to normal mode you will have
just a bite of time to climb up the ladder now you will go to the left and when you hear
the sound run to the left sideand shoot the gasoline barrel then you will get the shotgun(
if you don't have you are retarded, but if you don't have it grab your most powerful
weapon and shot his back than wait until you hear the strange noise jump down and shoot
him again with your most powerfull weapon.Yeap hi lost him legs now he may be steril but
stil dangerous so grab a incendinary granede and trhow that will make him fall then while
he's on the floor trhow a hand grenade and then another incendinary grenade.And that
probably killed him.

If you are having trouble with his second form, get your shotgun out, blast him a few
times, then when he gets right in front you, run to the other wall, he'll then swing
around, shoot him again with the shotgun, when gets close run to the other wall and
repeat. Also if you have flash grenades, use them, he'll drop to the floor, use grenades
against him and he's finished. If your on pro, be careful, his second form attacks, are
almost always be one-hit kills.

Well when u start off you are faced with his huge spine of course you'll usaully wanna get
the tmp for the shotgun is only good close-up.Use all the ammo you have with your tmp
until his legs falls off(glitch:skip his body falling apart and watch his legs walk alone,
works best with handcannon)Then quickly head upstairs and wait for him to come up if you
dont know when he will listen carefully for a noise and in the fog or smoke you can also
see him.NOW get the shotgun and fire at his head for maximum damage or his chest to make
him fall when he falls throw hands or fire grenades at him to take some damage and save
ammo.

In 5mins he should be dead and gone but becareful his grabbing attacks are powerful and
only takes if you dont have max health at the top of the bar!

Just keep on shooting him with a fast gun or powerful gun so easy -.-