depends on how he's gonna play the game, If you want a PvE crippler this is one
S 5
P 7
E 4
C 1
I 6
A 8
L 10
Traits: Small Frame, Finesse
Tagged skills: Small guns, Unarmed* (or whatever you want really, the unarmed is good for playing alone, useful vs humanoid enemies who don't have decent armour and a gun), First Aid/Doctor.
*if you do take unarmed, take it up to 102% ASAP, It will save you gallons of money and ammo in the end.
Note, this build makes the favourite low tier pistols do 0 damage in aimed shots (.44 Magnum JHP), so the deagle and the magnum revolver will be useless if you use the JHP ammo.
Perks:
3. Whatever you want
6. More criticals
9. Better criticals
12 Lifegiver
15. More criticals/lifegiver**
18. More Criticals
21. Brof/more crits**/Living anatomy***
**If you do take the second lifegiver you should take more criticals now
*** Only availible if you decided to up your Doctor to 60%
Note 2: this is a pure critical build with a 95% chance of a critical hit in the eyes
Tjis is pretty much the build of Tacitus, except that I messed it up so I could wear my Power Armour with him, so I chose as my 15th level perk Pack Rat, I don't regret it though, because the HPA loks so damn awesome.