Best Compression Methods for 'Specific' Games. Q&A

[PsYcHo_RaGE]

Any one Know Here How to Compress Assassins Creed Liberation HD(About 3gbs)?

I already compressed the game(Now its 1.56gb, Everything working fine) but i want more compression any suggestions.

Used these compression methods(Created 3 parts)
Part1-------------------------------------
on .forge files i used -mafr+srep+lolz
Where srep options were -m3f -ia- l512
and lolz options were -d256mb -tt8 -mc1023
Part2---------------------------------------------
on .pck sound files i used srep64+lolz
where srep64 options were -m5f -ia- -l512
and lolz options were -d256mb -tt8 -mc1023
Part3--------------------------------------------
on .txt, .exe, .dll etc files(left files)
used srep+dispack+lolz


Is there anything else i can achieve ultra compression?