First of all AMAZING JOB WITH THIS.
But that's the only reason I'm giving it 3 stars.
Having these new graphics takes away the classic video game feel. The thing I liked most about the XBLA version is that it has these graphics. It doesn't make the Xbox version all that special is what I'm saying.
These files will allow you to extract and implement all HD sprites and textures from the XBox Live Arcade version of Marathon:Durandal into your AlephOne installation of Marathon 2.
Detailed instructions on how to get it working can be found in the included ReadMe file.
This was made possible thanks to the combined efforts of Treellama and thedoctor45.
Hope you enjoy.