The game is a nice shooter with good graphics stylized for retro. Guns feel nice. Enemies are mostly fair. I liked the weapon upgrade system. I'd say that level structure reminds me of Mario games. Like there are some worlds that consist of different enviroments and like 5 levels in them. I played on difficulty above normal, and only thing that felt hard is the final boss.
Overall, this game was a pleasant experience for me. Not replaying.