arc.exe a -ep1 -r -ed -s; -w.\temp -munity data.arc "pack\*"
[External compressor:unity,zlib,reflate]
header = 0
packcmd = xtool.exe precomp:{compressor}:c32mb,t4 - - <stdin> <stdout>
unpackcmd = xtool.exe decode:t100p - - <stdin> <stdout>
don't forget xtool.unity.dll/liblz4.dll with xtool_1908_R3...
work on cuphead but YookaLaylee and inside nothing
