[Inge]

One of the Best Methods to Compress a Game external is -msrep+lzma:a1:mfbt4:d158m:fb273:mc1000:lc8

For Hitman Absolution, using this Tool, Split up the Install Folder to more Folders.
Then Compress them, Put them together to create DVD 5 or DVD9 Output, Define them with any Designer or your own script.

PS: Hitman Absolution is also good to Compress with Internal Compression (lzma2/Ultra64) but the Install Time is much longer than srep compression.

But think on, not every Game can be Compressed to smaller Output than the Game Itself. Crysis Series or Prototype 1,2 isn't good too Compress. Use here -m0 or other fast Compression Methods.