I’ve tried it on three PCs. On one, the game did not start. The Steam forums reveal this happens if you have certain USB devices plugged in, so I unplugged everything. It then started, but crashed whenever it loaded a new mission.
On PC number two, it ran, but got slower and slower as I played, until it was entirely unresponsive and crashed, losing all progress in the current mission. Some missions last longer than the time it took this PC to slow to a crawl, and you can’t save mid-mission.
Other players found one early mission was uncompletable unless they told Windows to use only one CPU core. Mouse acceleration varies with your framerate. Windowed mode is more stable, but hidden, and stuck at 1280×720. Some button presses didn’t register.
On PC number three, it’s fine. No major issues, runs beautifully, and it’s surprisingly pretty. So if you own three very different gaming PCs, you’ll be fine. If you don’t, the sheer shoddiness of this port condemns you to a technical lottery.
[...]
That’s why it crushes me that I can’t recommend this game. It’s just in a terrible state, and there’s no way for you to know if your £30 will get you a fantastic game, a chugging mess, or something that simply doesn’t work at all.
I don’t know how many towering PC successes it’s going to take to convince publishers and developers to invest in their own games properly, or how dismal the console games market has got to get before we start to look appealing to them
in comparison. But I hope it happens soon, because I hate seeing something as good as this ruined
by neglect.