Most of this game's data is within the VOLUME.DAT file

unknownSW2.jpg
Part of a mesh.

Format of some meshes.
Meshes are in subfiles that have the ASCII header: A2MF

......
02 80 XX 6C
{4ByteFloatingPointVertexes(X,Y,Z)+4ByteFloatWeight}
?? 80 XX 6D
{2ByteSignedIntegerNormalMappings(X,Y,Z)+2ByteWeight}