Gun GC cheats

At 1st this mission may seem difficult, but it really is not. In
the 1st part, get your bow ready. Every time Magruder is eater
next to or on top of the holes in the ground with the blue green gas
coming out of the floor, shoot an arrow into it. When it blows up,
it will take some health from Magruder. This will take a few times.
To better judge where Magruder is, look on your radar when you are
standing by one of the holes on the floor with the blue green gas.
When you see a red arrow by you and it is near the hole in the
floor, shoot the arrow. When it explodes, run. If you take some hits
from Magruder, run for a flask to repent your health. You will most
likely run out of arrows, but can find more in the back by the big
entranceway opposite of the platform and big pillars that you will
need to destroy in the 2nd part of the mission. Keep shooting the
arrows at the gas in the floor until Magruder's health bar turns
red. After that the 2nd part of the mission begins. To save a lot
of your health during the 1st part, crouch and stay near the outer
ring of rocks. If he stands directly in front of you, shoot about
one or 2 arrows at his feet. This will cause him to lose health.
If you got hit by his fire, run and find a flask. The 2nd part of
the mission is to collapse the cavern on Magruder. Save the game
when you get to this part. Do not worry about replenishing your
ammunition. Your sniper rifle, regular rifle, and 6 shooters will
suffice. In order to keep one flask and your health to where you do
not need to replenish, stay ducked behind the big rocks where you
start. Magruder will throw TNT. Use Quick Draw and shoot the TNT.
Now, pull out one of your rifles. Use the sights on them. The only
way you are going to get Magruder to throw TNT is to hit him in the
head. However, it is recommended that you stay and shoot at him from
the right hand side of the rocks. That gives you more cover than the
left hand side. The trick is how skilled you are at Quick Draw. This
is the only way to get past it this part of the mission. Try to hit
all the TNT when he throws it. Try hitting the TNT that looks pudgy
-- they provide a bigger boom. The small TNT sticks are good, for
when hit they will spread out. You can blow the 2 pillars by
Magruder's platform up with them. When he says you are blowing this
mine apart, you are half way there. When Cole says there is no one
left to help you, the mission is about over. When he throws the
3 sticks of TNT and you miss and they land by you, run to the
opposite side, and then go back to continue. You have 2 big rocks
to blow up to collapse the cavern. The best way to do this is to hit
the TNT when it is thrown when they are close to the rocks above
Maruder. By doing this you will complete the mission faster. When
the 2nd big rock falls, the mission is over and you have
completed the game.

Magruder is impossible to kill by shooting, as he is wearing armored
plating. Instead, use the bow with exploding arrows. Get Magruder to
chase you. As you are backing away from him, shoot an arrow at a
geyser as he walks over it. The flammable gas coming from the geyser
will explode and damage Magruder until he is almost dead. Now, when
he is on the higher level, shoot him in the face with the rifle
until he yells then get into quickdraw mode. Get ready to shoot the
big package of dynamite when he throws it. After shooting a few
sticks of dynamite, the roof will collapse on him.