JA2 Stracciatella is an unofficial patch for Jagged Alliance 2. But it's more than that: The goal of JA2 Stracciatella is to make Jagged Alliance 2 available on a wide range of platforms, improve its stability, fix bugs and provide a stable platform for mod development. Development of JA2 Stracciatella takes place on GitHub.
Ivan is a classic merc and one of the best in his trade. Unfortunally, he's too expensive right now...
I dont remember PPSh in vanilla JA2
True. The PPSh was added by a mod. JA2 Stracciatella is easily moddable. No coding needed if you want to add custom weaponry to the game.