Hello! Just registered on forums to answer your question.
I'm enjoying psi-rifle hybrid on hard oddity right now, and can give you some tips.
1. You can ditch crafting, evasion and throwing completely and invest into constitution, will and thought control instead. Well, throwing can be useful for molotovs and EMPs, but it certainly not required.
2. Don't rely on perception and motion tracking goggles when you are hunted by death stalkers. They are sneaky as hell and will ambush you no matter what. Instead wear riot gear and low frequency shield emitter and take their sting like a big boy.
3. You'll SUFFER without traps skill until you have MD goggles or shield device. Overall, investment in traps skill makes the game a lot more pleasant.
4. As far as I know, telekinetic proxy can be used to trigger ambush. Will test it in a few days.
Here's my character build.