You can pick Traits to the total value of +1 here, maximally 3 in total:
Brave: +2 Prowess and Willpower, +1 Martial
Value +1
Craven: -2 Prowess and Willpower, +1 Intrigue
Value -1
Calm: +1 Diplomacy
Value 0
Wrathful: +3 Prowess +1 Martial, -2 Diplomacy and Intrigue
Value -1
Ambitious: +1 to all stats, -1 on all Knowledges
Value +1
Content: +1 to all Knowledges, -1 Intrigue
Value +0
Diligent: +2 Administration,+ 1 to all Knowledges
Value +1
Proud: +1 Willpower, -1 Diplomacy
Value +0
Paranoid: +3 Intrigue, -2 Diplomacy and Administration
Value -1
Zealous: +2 Willpower, +1 Intrigue, -3 Diplomacy with non-Admech characters
Value -1
Open-Minded: -1 Willpower, +3 Diplomacy with non-Admech characters
Value: +0
Stubborn: +2 Willpower, -2 Diplomacy
Value +0
// Keep in mind that these will inform your Vitruvius' character, not just his stats. If anyone has a personality-trait they'd love to add, just write it in and I'll approve or not. Don't pick opposite personality-traits.
Outside of his basic personality, Vetruvius has also a special trait that makes him stand out among his fellow Techpriests, something that played a role in achieving the position of Magos Explorator. Pick only 1:
Magos Evocatus:
You have shown an unusual talent in rousing the machine spirits to fury and defiance, they hear your Rites much clearer than those of other Techpriests.
+5 Spiritual Guidance, additional +10 on attempts to counteract Scrapcode or hostile hacking. Once per battle you may call on a machine spirit of a damaged ship or vehicle, enabling it to function without penalty for one roll.
Lesser Luminem:
While you are not a full Electro-Priest, you have strong bonds to that brotherhood, having taken pilgrimages to all the great Generatioriums of Stygies VIII and having received a set of electoos on your skin that let the motive force pass over you unchallenged.
+5 Motive Force, +3 Prowess, immunity to electricity-based damage
Physicus Savantus:
You have an exceptional gift in calculating angles and leverage, in predicting the movement of objects affected by forces that would take a cogitator hours to compute. This gift is as applicable in construction as it is in void warfare.
+5 Mechanical Movement, +3 Prowess, +3 Martial in Void Combat
Genetor Minoris:
Your comprehension of the human form is both instincual and comprehensivly enhanced by study. In preparation for your Journey you have studied everything you could about your fellow man, to recognise anything from microexpressions to the altered smell specific hormones cause when being produced in greater amount with your enhanced senses.
+5 Biological Comprehension, +2 Diplomacy and Intrigue
As the last step before his Journey, VItruvius has also aquired augmentations or equipment that he believes to be helpful on his task, pick 1:
Enhanced Chassis:
Your body is coated in a cermite-alloy, your limbs replaced by steel and coiled fibro-musculatur that far exceeds most biological creature's strength and flexiblity. In preparation for your journey you have turned your body into a warmachine, complete with hidden weapons.
+6 Prowess, -2 Diplomacy with non-Admech Characters
Universal Interface Mechadendrite:
Every techpriest has interface-devices, even the least Enginseer must have the means to cumminicate with the sacred machine he is attempting to repair. This goes far beyond such tools, as your Interface contains most Imperial and Mechanicus access-codes known to the Archmagos Scaevola, and is equipped with an advanced cogitator to recombine these elements in thousands of combinations within seconds.
+20 to any attempt to access an Imperial or Admech Cogitator, both for viewing-access and manipulation, +10 for Dark-Age or similar Imperium-related computers.
Triple-hardened Noospheric Relay:
About as far from a regular Vox as a regular Vox is from a fire used for smoke-signals, this Relay ensures a constant connection to the Noosphere, the network of information that keeps Techpriests and Skitarii constantly connected. While most Magi will have such a relay, this exemplar is both extremly secure against disruptions or intrusions, and has additional functions, such as showing the position of connected Skitarii relative to yourself and allowing you to communicate in Binary Chant without interrupting a regular conversation using your vocal cords or vox-grille.
+3 Martial, constant reliable contact to nearby allies
Medical Suite:
At first glance merely a metalic backpack, this augmentations contains a variety of medicines and stimulants and a sophisticated mechadendrite to apply them, or even perform simple surgical procedures.
+3 Prowess, you can stabilize fallen allies reliably, ignore the first -10 wound-penalties you suffer and have a +20 bonus on counteracting poisons in yourself or others.
Refractor-Field:
A rare technology, though relativly far-spread, this shield deflects most attacks, though it grows weaker if it is used repeatedly.
Ignore the first hit in combat, -10 to hostile attacks after that.
Eradicator Beamer (Handheld):
One of the most powerful weapons sized for human hands that the Imperium can produce, this weapon projects a ray of energy that atomizes most targets, cutting through flesh, bone, metal and most other materials with ease.
+5 Prowess while at range, better than Meltas at removing obstacles
Advanced Personal Auspex:
Your ocular augments are far more advanced than those of most techpriests, piercing attempts at stealth, cataloguing the reactions of a conversation-partner and enhancing your personal aim.
+2 Prowess while at range, +1 Diplomacy, +10 on any rolls to detect hidden objects or sneaky targets
// I hope that's a satisfactory spread of options, again if you want some specific item at this point, just ask and I'll look into it.
Please make a comprehensive plan for this part instead of voting in parts.