I did play through much of "Boiling Point - Road to Hell" (Xenus) a while back and did rather like it. Nice quirky atmosphere, especially because of the weird people. The shooting was nicely tactical and deadly. I did also like the faction system and the way the balance shifted and how that influenced how you played the game. Unfortunately the story can only be advanced by throwing ungodly sums of money at people repeatedly. At first I liked it, but it never stops, so I stopped playing instead. But I put about 20 hours into it and I definitely enjoyed most of it.
And Precursors more recently. Liked it for some of the same reasons (charming people, atmosphere), but other aspects seemed weaker. Specifically the less tactical shooting and the less complex faction system. But the atmosphere in Tamerheim and on Goldin was surprisingly strong. Obviously subjective but I really liked the mix of the music and the russian language and the charming people. Though in that regard I think it's worth pointing out that Boiling Points english voice-acting managed to retain that charm, so it's not just the language.