First of all, only play this game if you consider yourself incredibly patient. You cannot save midlevel and you are going to have to watch the same cutscenes, shoot the same people, sneak around the same hallways, etc. over and over again. This game is also extremely bad at signposting / telegraphing. There are moments where it feels like the game goes out of its way to teach you that you cannot do something that you actually can. Some of the levels I thought were most difficult became incredibly easy after learning some small detail about them in a walkthrough. There are also a few terrible levels towards the middle of the game that you have to dredge through that involve a lot of running around big empty spaces. Despite all this, I think it's a very charming eurojank game with some pretty great levels towards the end (the hotel level is especially good and more reminiscent of the later entries) and a pretty killer atmosphere. Another thing to note is that this isn't really a full on stealth game like you might expect. It feels more like they came up with the premise of what a game where you play as a hitman would be, and then they tried exploring that concept from many different angles. It's extremely experimental in terms of design and structure for better or worse. Only hop into it if you know what you're getting into, otherwise just check out the later games.

Classic.