extraction Transformers war for cybertron pc steam version

[godannar1]

extraction Transformers war for cybertron pc steam version,
Or try with this script to extract files:
# Transformers: War for Cybertron coalesced.* decrypter (script 0.1.1)
# script for QuickBMS http://quickbms.aluigi.org

math ENDIANESS = 0
get TMP asize
get LINES long
if LINES u> TMP
endian big
math ENDIANESS = 1
endif

# thanx bacter
encryption xor "as;dwepo2345098]qw]{}p2039458pseasdfzcvvp;aseiurwefsdcfszdcvn"

log MEMORY_FILE 0 0
append
for i = 0 < LINES
get SIZE long
savepos OFFSET

if SIZE < 0
math SIZE ^= 0xffffffff
log MEMORY_FILE2 0 0
endian little
for j = 0 < SIZE
get DUMMY short
putvarchr MEMORY_FILE2 j DUMMY byte # yeah byte
next j
if ENDIANESS != 0
endian big
endif
log MEMORY_FILE 0 SIZE MEMORY_FILE2
math SIZE += 1
math SIZE *= 2
elif SIZE > 0
math SIZE -= 1
log MEMORY_FILE OFFSET SIZE
math SIZE += 1
endif

math OFFSET += SIZE
goto OFFSET

get SIZE asize MEMORY_FILE
putvarchr MEMORY_FILE SIZE 0x0a
next i
append

get NAME basename
get EXT extension
string NAME += "_decrypt."
string NAME += EXT
encryption "" ""
get SIZE asize MEMORY_FILE
log NAME 0 SIZE MEMORY_FILE

I do not 'clear yet if it works on steam pc game format, because continues to give me error to no avail.
maybe I'm wrong steps which type of file to be opened to allow extraction?
I would like to extract all compressed archive of the game to add changes to scripts and then unpack to enjoy the changes in the game.
the files are robot.xxx unreal engine encrypted format
obviously just rename xxx in the final extension .upk to be able to also read the program as:
umodel.exe
This program allows you to read and extract files, only upk mesh, texture no script
if anyone needs only change textures of any game just use "TexMod" program
allows faster without extracting anything direct editing of each game through game starts easy, easy, and painless effectively with all PC games
EU Explorer:
This program allows to read only the extension script .upk the problem and 'that does not allow changes on the script but only read.

if someone kindly were willing to give me some help on how to extract the whole package of transformers war for cybetron with the function of the top posted I would be very grateful thanks.

[aluigi]

http://www.gildor.org/en/projects/umodel

[godannar1]

Thanks Aluigi but that only explains how to export mesh, I need to access the source code script files, I managed to open Coalesced.ini file where it seems there are parameters that have an effect on the game