NOTE: Arcane Truculence only activates when GAINING overguard. This won't proc when you're at max overguard.
Melee Mods:
In addition to the base damage from Primed Pressure Point, I was also able to get Corrosive and Viral Damage on my Arca Titron thanks to Melee Exposure, and North Wind and Primed Fever Strike, respectively.
I also modded in 2 critical damage mods: Galvanized Steel and Organ Shatter. I usually don't put 2 mods of the same stat, but since I get so much critical chance from Kullervo's first ability already, I didn't see the point of adding any more critical chance on my melee. I also considered modding in Focus Radon instead of Organ Shatter, but I didn't mind the base 75% heavy attack efficiency, especially since I already have True Punishment and Quickening to help maintain my combo count. With that said, I merely modded in Galvanized Steel for its critical damage bonus.
Seismic Wave is pretty much a no-brainer when it comes to Slam builds, so there's that. I also paired that with the two Nira Warframe mods that also increase slam damage.
Then we have True Punishment and Quickening, which, as mentioned, help in maintaining combo count and help in killing enemies faster in order to stack Arca Titron's passive.
Warframe Mods:
Nothing interesting here other than Nira mods. Other than that, I went for 300% strength just because. Furthermore, the duration COULD be increased but I don't mind spamming the abilities since this ensures the uptime of Melee Exposure. As for efficiency, I don't really see any problem since I almost always don't run into energy issues, especially considering that I spam my abilities half the time.
Warframe Arcanes:
In addition to Arcane Fury, Arcane Truculence seems to work really well with Kullervo since this primes the enemies around you with max viral stacks. However, as mentioned, this doesn't proc when you're at max overguard, so it's important to be mindful of your overguard to ensure that Arcane Truculence procs when you need it.
If you've reached this far, consider subscribing for more builds like this in the future!
/ @dnagranav