Pretend you're playing Paranoia and take out the funny?
I'd say look for a book with the most horrible stories about people drafted and sent to Vietnam for the combat part and find the Cultural Revolution for the everyday part and take those as your starting points. It still kind of depends what you want to play up. For fostering paranoia, every other person you meet might not be a person, they might be a heretic or have mutations, or they might find a way to label you as one first. The combat is fast and brutal, give more descriptions at the start. In the early fights describe wounds and screaming in detail. Slowly move to bland notes that the injured are injured as the people get used to it.
Also use descriptions to focus on a theme for encounters, something may not even be interested in the players, it never looks at them when it shoots at/stabs/tries to dissolve them. Others may be wild-eyed but come like bloodhounds never breaking eye-contact as they stab with a rusty shiv.
And don't let up. If everyday life is a drudge, it's a horrible one. Overseers abuse them, underlings plot to take what they have, the governor puts down complaints with mass driver attacks approved by the Inquisition, if the players don't approve of that tactic, have the chain of paperwork cross their desk needing their rubber stamp.
If everyday life isn't bad, shove the contrast in their face. Point out how weak everyone there is, even them. Just two or three heretics summoning demons and the whole planet will die. Have them see enemies everywhere, and make it true, it's not their paranoia, the new guy is evil. And that's why he has to be killed with whatever farm impliment they have at hand.