Difficulty - High.
Step by step saves at the beginning of each level and before the final.
Difficulty unlocked - Highest.

To install:

Copy to .../My Documents/Eidos/

Note:

The limit on the number of saves has been removed.
The game was completed on a repack from Fenixx with a sniper fix from a friend KRBDZSKL.

Author: SuN1Sh1nE