Combining True Punishment with True Steel will give a 50% critical chance while channeling.
This weapon's damage can be equivalent to, or even surpass, other late-game melee weapons with the right mod setup.
The slide attack provides the highest damage per attack. A critical hit with this attack would usually end up dealing thousands of damage on each enemy with the right mods, even without channeling.
This weapon pairs well with the Berserker mod, as its high critical chance allows you to constantly proc the mod's increased attack speed, allowing for 1.92 attacks per second (with a maxed Fury mod and Berserker mod)
However considering the low base damage on normal attacks (which is the attack that Berserker benefits), it might be more viable to save mod space for other damage and critical mods, unless you are going for a combo-counter build.
Equipping this weapon as Valkyr maximizes the critical chance of her 4th ability Hysteria.