Pistols provide huge benefits in melee, and should be planned to be played in such way those benefits are reaped as often as possible. Maybe you could consider another weapon type?
As for constructive criticism
What difficulty do you plan to play on?
What caliber of weapon do you plan to use?
Your perception is very low for pistol build. Might not be an issue on normal, but you will stuggle on hard/DOM
Premeditation should be taken asap.
Focusing on both pistol and NO as damage source seems redundant
If you plan to focus on NO as main damage source, tranquility is very important.
Unless you are going to lean hard into the psi side of things Psycho-neural optimization and Expanded psi capacitance are not very good feats.
Given you have (some) throwing, I assume you plan to throw a lot of grenades, grenadier is amazing feat.
If you will focus more on Psi combat over shooting, mental subversion helps vs tough enemies
Critical power, ambush and sharpshooter (10 PER req) are bread and butter for any ranged build that has stealth. Ambush gets some time getting used to and is kind of acquired taste.
Overall - Your build tries to do 2 things at once but will ultimately feel lacking in both regards. This will be sufficient on normal, but might not be enough on Hard (depending on player skill). Underrail generally rewards specialization over focusing on many things.
