Dead Space 2: Cheat Codes [X-BOX 360]

Restore Oxygen – Press X, X, Y, Y, Y.

Dead Space 2: Cheat Codes [X-BOX 360] Free Download

Restore Energy – Press X, Y, Y, X, Y.
+1,000 credits – press X, X, X, Y, X.
+2,000 credits – press X, X, X, Y, Y, Y.
+5,000 credits – press X, X, X, Y, X, Y.
+10,000 credits – press X, Y, Y, Y, X, X, Y.

The same codes are found on Dead Space 1.
I checked it with a friend on his console, everything works.