Nourish gives a raw viral damage bonus to peacemakers as well as an energy multiplier. This allows us to both boost DPS and improve energy economy, although if you still have energy issues, you can use additional energy production methods such as [Equilibrium], Energize, [Grimoire] with [Xata Invocation], Zenurik Wellspring, Primary Exhilarate, Emergence Dissipate. Nourish also creates an AOE forced viral proc every time you take damage.

Archon Shards
1 amber cast speed shard
Rest into secondary crit chance shards (for highest peacemaker DPS) OR strength shards (boosts nourish, peacemakers and other helminth options).

SURVIVABILITY

[Muzzle Flash] is the major source of survivability creating a 21m radial blind every couple of kills
Catalyzing Shields reduces Mesa's max shields to 56. Rolling Guard is OPTIONAL and gives additional i-frames for shield gating.
Casting Nourish with [Brief Respite] + [Augur Reach] costs 35 energy and generates 66 shield which fully resets shield gate.
Just casting peacemakers twice also fully resets shield gate, as each cast costs 17 energy which generates 32 shield.

ARSENAL

WEAPONS
Use Corrosive Heat Regulators build (since we already have viral from nourish - swap Deep Freeze for Electric mod): https://overframe.gg/build/211174/

For Melee:
Option 1: Use [Furax Wraith] with Amalgam [Furax Wraith] equipped for +45% fire rate and can use Melee Crescendo if using Secondary Outburst and u can be bothered performing 37 finishers first (this will give you permanent x12 combo and +240% cc/cd from Secondary Outburst).
Option 2: If you own r5 Secondary Outburst, use [Ceramic Dagger] and equip secondary outburst on your secondary.

For Primary:
Use [Afentis] for Ballistari might which grants +20% fire rate.

COMPANIONS
[Helios] is the best sentinel when not using an armor strip subsume. [Helios] can use [Vicious Bond] to give passive AOE armor strip as enemies get damaged by abilities and can also use Seismic Bond which gives a free 30% efficiency with near continuous uptime. Helios Build: https://overframe.gg/build/542050/