This is just an Example of How to Build Melee Weapon

This build is suitable for 90% of Melee Weapons

Viral Build

Min/Max Viral Damage Rule: Status must inflict 10 stacks in less than 4 seconds

Viral damage can be corrected by:

Fever Strike (Primed Fever Strike)

North Wind

Yet we also need to keep enough Slash Dmg
There is no reason for too much Virus Dmg, as we will lose our Total Dmg

Possible Riven Mod should compensate any losses of the replaced mod and additionally contain something like Critical Dmg / Raw Dmg / Speed / Range

Crit-only Build

There is no specific rules, we just need to replace Viral combo mods by the following rules

We can use Gladiator Might to increase the total Crit Damage

Primed Smite Grineer or the same type, cause of multiplicative damage bonus

With a lack of Slash damage, we can use Carnis Mandible or Buzz Kill