Tunguska: The Visitation on Steam
store.steampowered.com
Tunguska: The Visitation is a single player top-down shooter RPG. Seek fortune as a Ghoul Hunter in an abandoned Soviet Exclusion Zone. Use your grit and ingenuity to survive deadly radiation, mysterious anomalies, and poisonous creatures. Go in guns-blazing, or stay in the shadows - your choice.

It’s a top down exploration/combat game and a loveletter to STALKER made by just one guy. The combat is pretty good once you get used to it.

(No relation with the developer, just think the game is neat).