Lemmings Revolution .ALF File Format

FILE
===========================================================================
Alpha           UInt8[]         Alpha values: 0 = transparent, 255 = opaque
===========================================================================

Note: The number of bytes present in the .ALF file is determined by the
dimensions of the .BMP file in the same directory with the same name. There
is one byte in the .ALF for each pixel in the .BMP, meaning the size of the
.ALF is (width * height) bytes.

Pixels are represented in the order of left-to-right first, followed by
top-to-bottom.
