Alright, before we get into this build: [Hirudo]'s DPS is terrible, the heal number is far larger than needed, if you want an actual endgame melee weapon, you'll have better luck looking at something like [Jat Kittag] or [War], and can get more than enough healing from an Arcane if you really need health.

Now, with that out of the way: BIG CRITS GO BRRRR

Now, assuming you have Gladiator Mods on your Warframe and a constant 12x combo, crit chance comes out to about 544.5%, average hit is about 12,606, DPS is about 23,322, average heal per hit is about 630.3, and heal/s is about 1166.1

As stated earlier, DPS isn't great compared to other melees, so Sacrificial Pressure is only there for set bonus; Rank 5-6 Pressure makes it 3 Forma, and if you have a Rank 0 you can make this for 2 Forma.

[Primed Fury] can be replaced by just about any mod you want, I like [Fury] because more big red numbers. This is what you want to take off for any Rivens you may have.