Local Stimm Dealer (Breaking Tide) Havoc 40
 Hive Scum Build - Warhammer 40k: Darktide 

This Hive Scum build is built around supporting the team by giving them extra Defense, Toughness, and Cooldown Reduction while having great zoning and DoT.  There are quite a few talents you can change based on your preference, even the auras and weapons are open to be swapped.  That's how versatile this build is.  For a more potent and spamming combo off stimms, first I would recommend removing Battering Strikes and instead put on Sample Collector.  Other perks like Regained Posture and Jittery can also be swapped to make room to push intoPickpocket for infinite ammo.  Auras I would recommend swapping to are between Ruffian and Gunslinger Improved depending on the team comp.  Finally for talents, your blitz can also be swapped to what the team needs.  If you choose to go into Boom Bringer then remove Pocket Toxin for Extra Pouches since a 4th rocket will be very useful.  The weapons you can swap to are up to you.  I also really like the Improvised Mk I Shivs  and the perks I run on those are Maniacs and Carapace with the Blessings being Precognition and Uncanny Strike.  The ranged weapon that also works really well is the Branx MKII Needle Pistol with the perks being Maniacs and Unyielding with the Blessings being Stripped Down and Concentrated Fire.  Those are some of my favorites to run, but you make use others and try them out.  I hope you enjoy the build!

Edit:  This is an updated version of the build after the tree rework.  The video is of the old tree.  This build now focuses on more chem debuffs on the enemies.