ACS is a very old repack, we didn't update it yet, if you want to see that "thing", you probably wanna see Rainbow Six Siege but even then R6S by us is an old repack with some of old methods, we will replace it later.

i have use this compression methods for my game but failed to extract it please help someone! i m a new user.
method : -mpzlib+precomp+srep+lzma+xz/$msrsolid=msr+zstd/$void=msc+srep/$text=srep+zstd/$precomp=reflate+msc+srep+delta+xz

[External compressor:precomp]
header = 0
packcmd = precomp043 -intense0 -cn {options} -o$$arcpackedfile$$.tmp $$arcdatafile$$.tmp
unpackcmd = precomp043 -o$$arcdatafile$$.tmp -r $$arcpackedfile$$.tmp

[External compressor:srep]
header = 0
packcmd = srep {options} -m3f -a1 $$arcdatafile$$.tmp $$arcpackedfile$$.tmp
unpackcmd = srep -mem484b {options} -d -s - - <stdin> <stdout>

[External compressor:msc]
header=0
packcmd=MSC c -v -f -wav=1 -raw=1 -bmp=1 -ddsraw=1 -ddsdxt=1 -mp3=1 -bmf=9s -tak=9+ -dxt=1 -lzma=hc4,lc8,lp2,pb2,fb273,mc1000 $$arcdatafile$$.tmp $$arcpackedfile$$.tmp

[External compressor:reflate]
header = 0
packcmd = reflate -process $$arcdatafile$$.tmp $$arcpackedfile$$.tmp
unpackcmd = reflate -restore - - <stdin> <stdout>

[External compressor:xz]
header = 0
packcmd = 7z a -txz -an -mcrc=0 -m1=lzma2:d25:fb=273:mf=bt4:mc=1000000:lc=4:lp=0 -mmt=on -mx9 -so $$arcdatafile$$.tmp <stdout>
unpackcmd = 7z x -txz -mmt=on -an -y -si -so <stdin> <stdout>

[External compressor:msr]
header = 0
packcmd = msr -fast -cn -t+j3 -o$$arcpackedfile$$.tmp $$arcdatafile$$.tmp
unpackcmd = msr -o$$arcdatafile$$.tmp -r $$arcpackedfile$$.tmp

[External compressor:zstd]
packcmd = zstd -5 $$arcdatafile$$.tmp $$arcpackedfile$$.tmp
unpackcmd = zstd -d -f <stdin> <stdout>

[External compressor:delta,lzma]
header = 0
packcmd = fazip -i0 compress:{compressor}{:option} <stdin> <stdout>
unpackcmd = fazip -i0 decompress:{compressor}{:option} <stdin> <stdout>

[External compressor:pzlib]
header = 0
packcmd = pZLib e {options} -m2 -t25p -c128m - -o - $$arcdatafile$$.tmp -o - <stdout>
unpackcmd = pZLib d {options} -t75p - -o - <stdin> <stdout>