Infiltrator LasSniper Marksman
 Veteran Build - Warhammer 40k: Darktide 

The standstill build. Largely created this build to fulfill krak and marksman penances. Very static rockPaperScissor gameplay. 

Weapons selection:

If you are running deadshot, you cannot use Helbore II. Can only use Helbore I or III. My preference is I due to more ammo per clip (around 16-20 shotes vs 11-14 shots). On full charge, able to one shot Reapers on Crit weakspot.

Catachan Sword is largely for ragers and monsters with melee. Beceause stamina management is required for this build. Alternatives are shovels, but I find them weaker against ragers squads.

2 infiltrates:

There is a reason for having two charges for infiltrate. The first charge is to get ~15 seconds roughly of spacing to take out your lasSniper, reload, and charge up the first shot for guaranteed kill. As well as staying still to build Marksman stacks which builds to full in 7.5 seconds without ranged kills.

The second charge (if available) is to use against pox walkers due to having no other tools to deal with them (remember deadshot empties your stamina)..

Other talents:

All nades are for bulwarks and maulers. You should have more than enough with 3 at hand, 1 every 60 seconds.

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Suppression immunity is largely unnecessary using any las Weapon. But can be taken. Ammo economy is not that much of an issue.

Marksman stacks largely become dependent on weakspots after stamina runs out. Cannot always depend on hitting those weakspots though.