This is a versatility build, taking advantage of the DEX->melee->gun conversion, and using a laser pistol as primary weapon. The core idea is to dump PER completely, which may look like a terrible idea but is actually not a problem at all. Our gun skill is perfectly fine thanks to versatility, and we don't miss on any significant feat. This allows us to meet the CON requirement for Survival Instincts while also getting hight INT. This stat allocation (max DEX/high INT) gives the build high skill point efficiency, and it ends up reaching most skill thresholds in the game.
Finished build link:
https://underrail.info/build/?HgMQAwkDAwkZOQDCoAAAwqBKMEIwS2RCQFoAGQBGVgBCKygmwqMWMMKaYlpLKR8xwocqwrNdwoXCneKnvgXita4K378Stats: 3/18/3/9/3/3/9
Core feats: Versatility(+10), Survival Instincts, Critical Power(+5), Practical Physicist, Hight Technicalities, Recklessness
Equipment: amplified efficient laser pistol, seeker goggles, infused rathound leather armor
pros:
- Very high and continuous damage output
- Amazing skill point efficiency
cons:
- Only starts working around mid game
- No defenses
To give some figures, on the finished character I have a 9 AP laser pistol (8 with eel sandwich). At 8 AP we attack 8 time on a single haste round (adrenaline or PTC) and 11 times on a double hasted round (adrenaline and PTC). The gun does 56-77 base energy damage, +32% unconditional boost from High Technicalities (+48% with hypercerebrix!), 88% crit chance (6 base + 30 SI + 7 Recklessness + 18 goggles + 12 infused rathound leather armor + 15 stim focus), 796% critical multiplier (Amplified + Practical Physicist + Critical Power). So, on a typical round, out of 8 attacks we can expect 6 criticals dealing about 800 damage each. If we go all in (hardcore chips, adrenaline, super soldier, hypercerebrix), factoring blindsiding in: expect 9 criticals dealing 1080 damage each.
The skill point efficiency is ridiculous: my character can pass all lockpicking, hacking, pickpocketing, trap, persuasion and mercantile checks, has max accuracy on grenades throws and can craft any useful item with max quality components. And despite having 3 AGI, he ended up with about 200 effective stealth.
Of course the character is extremely fragile and anything going through the energy shield is pretty much a death sentence. But nothing should ever hit you with high stealth, high initiative, Force Field, Stasis, and 6 killing blows per round.
However, the character does have one major issue: it takes a long time before it actually works. At the start of the game, versatility is too weak to be effective, the available energy weapons are considerably weaker than the crafted ones, no critical multiplier is 90% of our DPS missing, we don't have Aimed Shot and our crit chance is low. So, early on we play a suboptimal knifer/grenadier/trapper. It gets the job done, but it would certainly be a miserable experience as a first character. The build starts shining at level 16, and is mostly complete at level 26.
Final notes:
If you're new to the game, don't play this. There are better laser pistol builds out there on the forum. But this one is a little quirky and I like quirky builds. And it worked well for a full oddity run. As a conclusion, I'll put the full final fight log. Not as stupid as a sniper, but still...