Dead Space - Cheat Codes

YXYXXYXXYXXY - 5 Nodes one time only per playthrough.
X3, Y, X. - 1,000 credits one time only per playthrough.
Y, X3, Y. - 2 Nodes one time only per playthrough.
X3, Y2. - 2,000 credits one time only per playthrough.
X3, Y, X, Y. - 5,000 credits one time only per playthrough.
X, Y3, X2, Y - 10,000 Credits.
X,X,Y,Y,Y - Refill you Oxygen.
X,Y,Y,X,Y - Refill your Stasis and Kinesis energy.

Impossible Mode:
To unlock Impossible Mode, beat the game once through in its entirety on
the normal difficulty setting.

Level Six Suit Schematic:
To unlock the Level Six Suit Schematic, complete the game once through in
its entirety on the normal difficulty setting.

Back Story Log Entries:
To unlock the back story log entries, complete the game once through in its
entirety on the normal difficulty setting.

Random Goodies:
To unlock ten Power Nodes and 50,000 credits, complete the game for the first
time once through in its entirety on the normal difficulty setting.

Completion bonuses:
Successfully complete the game and save it. Continue on your cleared
saved game file to get the following bonuses.

-Ten Power Nodes
-50,000 credits
-The back story log entries
-Impossible difficulty setting
-Level 6 Military suit schematic

Defeating the final Boss:
Do not be intimidated by its size. Though massive, it is very easy to kill.
The following was done under the Medium difficulty setting. Upon starting
the fight, notice you are "caged in" by the Boss' tentacles. Notice the
yellow "blooms" around the Boss' mouth. Shooting each one will get you
closer to killing it. However, upon shooting a few of them, the boss Grabs
you, holding you in the air. During this time, it appears that you are
helpless. Aim whatever weapon you are using at the time and shoot the yellow
blooms. After a few shots you will be dropped. The Boss will then begin
slamming its tentacles at you more frequently. They are very easy to avoid.
Strafe left to right constantly. They will never hit you. The Boss will roar,
shoot a few exploding cells at you, or will drop enemy pods upon you. This
is part is also easy, considering it is usually only two small Necromorphs.
After you destroy the blooms, you will notice a "caged" area underneath the
beast. Under this rib cage lies its many hearts. Again, use same strategy
with the whole tentacle scenario. After a few times, the Boss will have
his fit and open up again. Unload and the Boss will come tumbling down.

Hidden message:
Take the first letter of each chapter and arrange them in order to spell
out the sentence "Nicole is dead".

Help With The Hunter:
Ok, so we all hate the hunter. If you don't know, he is a regenerating
necromorph that cannot be killed. The first time you encounter him is tough,
and you just have to run. I found that it is best to shoot of his legs because
he doesn't regenerate them immediately and he is much slower without legs.
Then you freeze him and he gets taken away. He comes back in a later act, so
use the same strategy and then fry him with the Rocket engines. That will be
the end of him. Don't forget the Power Node the Hunter drops.

To Kill the Leviathan:
First, take out the tentacles. Then when the center opens aim for the orange
ball. Grab the explosive canisters, and launch them in the center, or grab the
lathan pod and launch it into the center.

Finding the Peng treasure:
To get Peng you must be on the flight deck on Chapter 13. When in the flight
room where your ship "used" to be, look between the walkways. You should see
a statue. Pick it up with kinesis and you will receive the Peng treasure and
its achievement or trophy. It can also be sold for 30,000 credits.

Secret message key:
In Chapter 1, just after you repair the claw for the tram hit your objective
finder. Follow the blue line into the hall way where you need to go. Stop as
soon as you enter the hallway and look up at the catwalk above your head. Ignore
the alien for now. Walk until you find the first corridor on the right. Walk into
it there to see writing in an alien language all over. Look down there to see a
message that says in English that reads "Don't listen to their lies, read what
they're really saying." Keep reading to find a key that shows the alien language,
and below that the corresponding are English letters from A to Z and 1 through 0.
Although not everything will be legible, you should be able to decipher enough
to understand what is written.

Wear Military suit in Impossible mode:
Successfully complete the game in New Game Plus mode with the Military suit
bought and equipped, and save the game immediately before the final Boss. Once
the game ends and the credits begin, skip them, and do not save the game when
prompted. Instead, immediately start a new game on the Impossible difficulty
to start with the Military suit.