Overwatch/DMR
 Veteran Build - Warhammer 40k: Darktide 

This build is for those who want to play a Designated Marksman in their strike team. Your job is first and foremost to counter enemy shooters and elites and allow your team to deal with the weaker mobs in the melee fray. 

EQUIPMENT 

• Starting off the preferred weapon for this build is the MG XII for its firepower that is capable of quickly dispatching all shooters and elites. 
• The power sword for those times where you have no choice but to join the melee is great for tackling hordes and even the most armored of heretics with is charge ability.
•  As for curios anything that boost health or toughness is great because compared to some of the other operatives in the game the veteran is pretty squishy so boost those stats to balance it out. 

FEATS

• Exhilarating takedown(ET). While at first confirmed kill seems like the obvious choice with your main job being killing shooters and elites a lot of shooters in the game dont count as elite so going with ET is overall the best choice in making sure you keep your toughness levels up.
• Sniper(SN). As the DMR in your team sitting the back lines targeting those ranged foes and elites this feat giving you up to 20% damage boost is great for quickly taking out those ranged foes who keep their distance or are attempting to retreat.
• Bio-Optic targeting(BOT). This one is a bit of a no brainer marking high priority targets for your team is amazing and allows them to help single out those elites you cant get a sight on.
• Camo Expert(CE). Getting shot at while trying to pick off targets and getting suppressed screwing up your aim is no good best away to avoid this is to not get shot at. Unwavering focus is a good alternative because taking the reduced toughness damage is not bad either, but CE edges it out because not getting shot to begin with is simply better.
• Deadhot(DS).DS is great because it helps you reach out and touch those further away enemies and stay on target for a follow up shot if need be. The 25% crit chance is great too. The downside is the fact is takes 10% of your stamina a second while you are ADS but that is easy to deal with by just taking a moment to stop aiming. A curio that boost stamina regen greatly helps with this as well. 
• Conterfire(CT).This right here is the bread and butter of the overwatch build highlighting all those enemy shooters plus a 25% weak spot damage boost and getting a duration reset on every designated enemy kill is unbeatable. 

GamePlay Tips

The idea behind this build is to play an overwatch role for your team and taking out ranged threats and elites for your more melee-oriented allies. You want to keep your distance from most fight but so much as to completely lose coherency, but if you do that is why you have curios that help with toughness. You should more less be popping your volley fire at the start of every engagement and start picking off priority targets and as long as you kill those designated targets it will stay active pretty much the whole fight. You should kill and all enemy shooters your see so they cant light up your allies who are fighting the horde and other melee foes. When Elites come into the mix my priority list is Snipers>Trappers>Bombers>Gunners>Shotgunners>Flamers>Pox Hounds>Maulers>Raggers. This priority list is based of my experince of what enemies can potentially have chance to end a run and wipe your team. Ogryns with the exception of Reapers should be engaged in melee with your power sword with rending and the charge active. Grenades should be used more in supporting way and saved for emergencies, if teammate goes down is surrounded by a horde or is just in general getting overwhelmed a well-placed frag can decongest the situation giving them breathing room or a chance for an ally to rescue them. Now, if you do find yourself in melee typically a horde encounter the powersword is second to none in clearing them out. Activate the charge, aim for the head, heavy attack, dodge back and repeat the first three steps and you will be lopping off heads left and right. The power sword charge with a rending bonus is also really useful for killing Ogryns because the power sword charge pretty much ignores their armor and there is nothing got as satisfying as splitting a crusher in two. 

Conclusion

That's all folks. I am by no means a darktide expert and the long-range approach may not be everyones thing, but this is a build I really enjoy and have had a lot of success with. That said I wish all you sharpshooters the best of luck in slaying heretics in the name of the God Emperor and carrying out his whill in the name of the imperium.