Ray, you have the ability to get close to him and press triangle, which will
allow you to do the jump attack on him.  So anyway, defeat ray, and get ready
for some more cutscenes.  You have to love Raiden.

 _______
/       
| ACT 5 |
\_______/

You can’t play around with mark II during this next briefing, so just sit back
and enjoy the story.  You’re going to board outer haven via catapult here.
Once you do, get out your mark 2.  There isn’t anything worth exploring to
find here, and this is by far the shortest chapter gameplay wise.  Shoot the
first two guards with your mark 2, and continue up the left side here.  Two
more FROGS will jump down, take them out as well.  Another will jump down
ahead of you right as you get to the place where the last FROGS jumped from.
Another two FROGS lay up this path, take them out as well.  Just stick to the
left side of the ship all the way to the other side.  Press against the walls
to get past the cargo when you have to, and mind the geckos.  There will be
two final FROGS here, near the end of this side.  Once you get to the other
side, a gecko will jump down, and will soon be blasted by the artillery.
Another gecko will run over to investigate, but will soon resume it’s patrol.
Once the coast is clear, head to the door and press triangle.  Mash triangle
as fast as you can, and the door will open shortly.  Head inside, and make
sure you have a P90, rations, and a syringe on standby.  You’ll need them soon
enough.  Head into the elevator to start the next major battle.

First off, you’ll have to take out a bunch of FROGs.  Just use the computers
and different levels as cover, prioritizing the enemies on the same level as
you first, then go by proximity.  After you’ve cleared out the inital batch or
two, more will attack solely from the balcony above you.  Take them out.  A
few more batches of FROGS will fight you on the ground floor, just use the
P90 to take them down.  There is ammo and rations littered all over the
room, specifically near the blocked doorwars on the uppermost floor. When
you’re done with the FROGS, get ready for the last battle against a beauty
and the beast member- Screaming Mantis.    Meryl will start to shoot at you
not too long into the fight, and a bit later on she will try to shoot herself.
Just CQC her when she does the latter, and dodge for the former.  If you’ve
played the original Metal Gear Solid, immedietly switch your controller to
something other than one, but don’t pause the game before doing so.  When
otacon ridicules you, and after campbell asks you to try the same thing you
just did, run around wildly shooting every weapon in your inventory to
fruitlessly attempt to damage mantis before giving up, walking away, and
crying yourself to sleep.  Delete your game save data, and return Metal Gear
Solid 4, because "you can’t figure out how to beat it."  However, if you’ve
never played metal gear solid, you should instead use the syringe on yourself
to break the strings controlling you, and then avoid getting hit by those
ghostly projectiles mantis shoots at you.  If you get hit, no big deal, just
use the syringe again.  Anyway, you will notice that, while your aim will no
longer shift, you still won’t be doing any damage to Mantis.  Aim for the red
doll instead of mantis.  It may not seem to be doing anything, but if you look
closley you will see that the strings are slowly snapping on it.  Eventually
it will fall off, in which case you should run to pick it up.  Once you do,
equip it in your inventory, and aim for Mantis.  Since she still has that blue
doll, she can still attack you with the dead enemies, but meryl will no longer
be under her control.  None of this matters anyway, since the second you hit
her with the mantis projectile, all you have to do is continue to hold L1 and
shake your controller up and down in your hands to quickly kill her.  She’ll
transform into her beauty form, you’ll shoot her in the face with the mark 2,
and then psycho mantis will make a cameo before drebin explains how she got to
be here.

For a while, you’ll just keep on running straight as different parts of your
past flash by in audio form.  The last three chambers will drop this
treatment, however, and you’ll have to dive roll by these dwarf gecko, as
otacon calls them... I think.  Don’t bother shooting them.  Just run up to
their front lines and dive across them.  Run a bit more after you’re clear of
them, and then dive again after every successive group.  After this, you once
again realize that Raiden kicks major ass, and you enter the microwave room.
For a while, you can get by with just walking, but eventually you will have to
crawl along.  Just hold the left analog stick forward, until the end where you
may have to place your controller on the floor to hit triangle fast enough.
You should not be able to see triangle in the part where you are crawling on
your hands and knees, and when you start crawling you shouldn’t see it too
often at all.  Don’t mind the fact that your health is basically at zero, this
is normal and you should be able to reach the end of the door in time.  While
your health will run out rather fast, you can still move as long as your
stamina bar has some life in it.  Anyway, after you get to the end, more
cutscenes occur, and you have basically saved the day.  Well, I guess it was
Otacon who really saved the day.  I don’t know why you even had to go through
that microwave room in the first place to be honest, the Mark III made it all
the way by itself.  In the end though, it is a good thing you went. Also, did
anyone else wonder why Meryl, and later Johnny, didn’t walk with you through
those catwalks with the mini gecko?  I mean, they could have just held out
outside the door there... And why did Raiden have to defend that area if
Otacon locked the door from the inside?  Just seems pointless to me.  Then
again, it wouldn’t have been nearly as dramatic, and johnny may have never
asked Meryl to marry him without that, so whatever.  Also, you probably would
have been killed if Raiden hadn’t come to save the day, which seems to be a
reoccuring theme in this game.

So, after this whole touchy feely "we won" cutscene, you get to have one last
boss fight against liquid/liquid ocelot/young ocelot/ocelot.  The controls for
this fight are different than the normal scheme, so be sure to check them out
with a quick press of Select, which is also the only way you can pause the
game.  Basically, mash R1.  If you’re low on health, or if you are just that
kind of fighter, you can block with L1.  If you hold L1, R1 will always be a
hard punch.  Pressing X will dash in whatever direction you are pressing on
the left analog stick, and will execute a duck if you aren’t pushing the stick
in any direction.  If you press R1 while dashing towards Liquid Ocelot, you’ll
do a body bash.  Tapping R1 a few times can net that sweet punch punch kick
combo we know and love from past metal gears, and holding R1 will allow you to
do a hard punch, or a CQC toss if you apply some left analog stick action.
There are a lot of quick action button press thingamabobbers here, which
basically means you should be ready to follow any on screen cues to press
triangle or R1.  This is especially true durin the CQC grabs on either side.
If you toss liquid/ocelot to the ground, you can either choke him, punch him
in the face, or if you’re slow, punch him in the gut.  Near the end of this,
there will be a finishing button press, where if you press it in time, you’ll
slam his face into the ship, and if you miss it, he’ll turn you over and punch
you a few times.  If you get him near one of those three posts, you can also
do a cool environmentally sensitive context press where you slam him into the
post and choke him.  This is not a one sided fight, however.  Liquid/Ocelot
has a few tricks up his own sleeve, with different ones for each part of the
fight.  In the first part, he will do a body bash, which will knock you to the
ground.  He’ll make a grunting sound along with crouching before he does this,
allowing you to dodge before he strikes.  Just try to CQC throw him for this
part of the fight.  After a bit, you will punch him in the face, and knock
some of the liquid out of him.  He’ll now be liquid ocelot from MGS2, and will
bring more powerful blows with him.  Your health, along with his, will be
restored to a point as well.  He’ll dodge more in this part of the fight, and
it’s a good idea to block here.  He has a very powerful punch that will
quickly end you if you don’t dodge it.  Thankfully, there is enough time
before he uses it that you can dodge it often, so long as you don’t dodge
INTO it.  If you can end him near a post, you will be able to simply
repeatedly cqc him into one of these until eventually the game takes over and
you guys exchange flips to start the MGS3 battle, but I wouldn’t count on that
as being your tactic.  Once again, count on your CQC skills to eliminate him.
If you have gotten this far, it’s rare to fail, but it’s still possible.
Ocelot now gets some CQC moves of his own now, although you can break out of
them if you time your button presses right.  After a bit of this, you’ll both
turn your age and all of your abilities besides basic hard punches.  Just
nudge a bit towards him, and let him come the rest of the way to you.  Once
your fists are nearly touching, with like 6-8 inches between them, press R1.
As soon as you see the camera cut back to the "you can control your
character" view, immedietly, without pause, press R1 again.  Do this for the
rest of the fight, and he won’t have a chance to counter, which basically
means you win.  Just don’t be slow with it, else he’ll counter you.  Even if
he does, it’s actually kind of hard to loose at this point in the fight.
If you’re actually trying to beat ocelot, you should win no problem.  Time to
sit back, watch the end of this chapter, and a whole load of cutscenes.  Bit
of advice:  Just because you see credits, it doesn’t mean that the game
is over.

                           =======================
                           ! Alternate Strategy  !
                           =======================
  In the Boss Fight with Liquid/Ocelot ( Both Rounds ) you can significantly
  reduce your chances of getting hit by losing your balance on any of the
  ship�s edges. To do this, run to the edge of your choice and attempt to
  walk off of it. Doing so will make Snake frantically flail his arms to
  regain his balance. While Snake is struggling to regain his balance Ocelot
  can throw punches at Snake but will not be able to deal any damage until
  Snake regains his balance. Feel free to use this little trick to your
  little heart�s content.
  
 Thanks to J.M. for this tip.

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
                             Special Thanks/Credits
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
First off, a sincere thank you is directed towards Hideo Kojima and the rest
of Kojima Productions for making this amazing game.  I’ve been a Metal Gear
fan since the original Metal Gear Solid, and this game was the perfect end to
it all.

A special Thank You goes to the following people who have contributed to this
guide:

  Etcee-  Corrected some mistakes I made after the Crying Wolf Boss battle,
          also contibuted the name and location of "The Best Is Yest To Come"
          iPod music track in Act IV
  Jeff - Provided alternate strategy for Crying Wolf boss battle.
  Nick - Provided alternate strategy for Crying Wolf boss battle.
  J.M. �  Provided alternate strategy for Liquid Ocelot boss battle.

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
                              Closing Notes/Contact
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
This guide is far from done, but it is still more than sufficient to get you
through the game.  There may be some factual errors in this guide, seeing how
this was my second playthrough. If you spot any, please let me know at
gamefaqs@dboyzetown.com and include something relating to this guide in the
subject so I know it isn’t some random spam.

This walkthrough reposted to TheGameReviews.com with permission of the author.