I own this on Steam and enjoy it quite a bit. It's a very satisfying stealth game that gives you some decent tools to deal with any mistakes you may have made. I like stealth gameplay that encourages you to stick to the shadows but doesn't outright punish you with an instant game over when you mess up. Screwing up here can quickly result in having to reload, but it does give you a few powerful tools to recover in most cases and there's some decent weapons you can get your hands on to defend yourself when the action heats up when things go awry. The WWII atmosphere and setting is really cool, being loosely based on a real person and giving us a unique perspective that we don't usually get from WWII-inspired titles.
The original developers behind this title unfortunately shut down shortly after the game was released, and it seems the original publisher is also defunct, so it's a mystery at this point who actually owns this and could get it in the hands of GOG so they could take over as stewards of the title, ensuring its long-term compatibility and operation. Since the game seems to exist in some type of limbo it'd be great to have GOG take over and give it a permanent home.