ZenHAX

Use the latest version of quickbms and then use reimport2.bat.
This new method has some limitations too, it depends by the format of the archive.

The archive file is data.win. The file including parts for translation is STRG.txt.
Reimport2 doesn't allow to import bigger size file.

The tool threw me an error when I tried to decompress this data chunk with zlib:

while I can decompress it without problems through HexEdit.

It works perfectly, remember that if you use "comtype zlib" you have also give a decompressed size value which is same/bigger than the real decompressed size, only zlib_noerror and unzip_dynamic do the job automatically:

comtype zlib_noerror # or unzip_dynamic
get SIZE asize
clog "" 0 SIZE SIZE

I actually did specified an unzip size but it still gave me the error saying
"Error: the compressed zlib/deflate input is wrong or incomplete (-5)".

This is the code I'm using for the simple test:

comtype zlib
get Name basename
string Name + ".dcp"
get ZSize asize
set Size long ZSize
math Size * 20
clog Name 0 ZSize Size

However zlib_noerror does work though.

Your script is correct but your dump is incomplete so the zlib library returns an error if the input is not perfect, in fact the zlib format has a crc at the end to check the input.
zlib_noerror simply ignores these errors and doesn't consider the decompressed size.

I never knew that before. That will make sense. The file I'm dealing with has no fields about the compressed size or unzip size while HexEdit will crash if I decompress the whole compressed chunk directly, so I have to perform a decompression on every piece of data splitted by the zlib magic "\x78\x01" in this case. Guess I'd have to use the noerror method then.

or you can just use offzip on the whole data/memory and it will do the job for you automatically, it's just its primary purpose
http://aluigi.altervista.org/mytoolz.htm#offzip

I was wondering if it would perform a complete decompression either method.