Veteran Officer (Bolt Pistol)
 Veteran Build - Warhammer 40k: Darktide 

Weapons

The Aridin Mk I Power Falchion works very well with either the Godwyn-Branx Mk IV Bolt Pistol (high damage/single target) or the Godwyn-Branx Mk VI Bolt Pistol (AOE/Stagger). You can use Power Output as a dump stat instead of Heat Management, that may be preferable for clearing larger mobs.

The Bolt Pistol has a Sprint Speed of +0.60, so you could use a slower melee weapon like a Cadia Mk XIIIg Assault Chainsword (if you like chainswords) or even a Catachan Mk IV "Devil's Claw" Sword (horde clearing focus).

The Mk VI Bolt Pistol has lower damage than the Mk IV, but much higher stagger radius, excellent for Covering Fire! However then instead of Collateral the Mobility is a better dump stat, but then a slower melee weapon will hurt the mobility of the build. So you can pair the Mk VI with Maccabian Mk IV Duelling Sword (Shred, Rampage) if that is your preference, in which case you can use Mobility as a dump stat on the Bolt Pistol!

Tactics

Always stay in coherency! Maintain situational awareness even more than usual! Keep your teammates on their feet!

Mark priority targets with Focus Target!+Focused Fire for up to +30% damage!

With the Godwyn-Branx Mk IV Bolt Pistol Snipe Specialist and Elite enemies with the Bolt Pistol!

With the Godwyn-Branx Mk VI Bolt Pistol You can also stagger enemy formations that are crowding your team mates!

Use your melee for clearing hordes and engage enemies when your Bolt Pistol runs dry!

Use Krak Grenade on hard targets like Orgyns, Bosses, Monstrosities!

Talent options

You can go for Volley Adept, Reload Boost or Out for Blood instead of Covering Fire with the Mk IV Bolt Pistol.

You can go for Leave No One Behind instead of Exploit Weakness for a more support oriented gameplay.

You can go for Deadshot instead of Exploit Weakness for additional ADS crit chance and sway reduction with the Mk IV Bolt Pistol.

You can go for Duty and Honour instead of Only In Death Does Duty End.

You can go for Survivalist instead of Fire Team, if the team is more ammo hungry than average.

Ability options

Voice of Command is the obvious choice for this role. Duty and Honour is more generally useful with a competent team than Only In Death Does Duty End, which can situationally be very useful for a desperate clutch (save the game) with randoms, that get downed in a boss fight arena full of enemies.