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Mechanicus II tactical combat with unit positioning and cover

Mechanicus II Unit Tier List: Best Units & Squad Compositions

Warhammer 40,000: Mechanicus II unit tier list ranking every unit from S to B tier across both factions. Best squad comps, what to avoid, and how to build your first campaign roster.

BLUF

Warriors and Rangers. That's your core. Everything else supports them. Wraiths are non-negotiable for Necrons — without one, your leader dies and the mission ends. Servitors are your Cognition battery. Flashy units are fun but don't win missions — reliable damage and resource generation do. Source: Game Truth launch-weekend testing.

Quick Answer

Unit Tier List & Best Picks

S-tier: Warriors (Necron), Rangers (Mechanicus). A-tier: Wraiths, Servitors, Immortals. B-tier: Tech-Priests, Enginseers. Core units win missions — don't skip the basics.

Unit Tier List

StepDo thisWhy it matters
S-Tier: Necron WarriorsCore infantry. Consistent damage output, reliable Dominion builders. Cheap to field. Backbone of every Necron squad.Source: Game Truth. Warriors are your primary tool for building Dominion early. Don't skip them for flashier picks.
S-Tier: Skitarii Rangers (Mechanicus)Generate Cognition by shooting from beyond minimum range. Keep them at the back. Primary damage dealers for Mechanicus.Source: Game Truth. Rangers are the Mechanicus equivalent of Warriors — essential, reliable, efficient.
A-Tier: Canoptek Wraiths (Necron)Teleport bodyguards. Swap positions with endangered allies. High survivability. Keep mid-line near your leader.Source: Game Truth. Not optional — hero protection is critical and Wraiths are your best tool for it.
A-Tier: Servitors (Mechanicus)Generate Cognition by taking damage. Park them in enemy faces as damage sponges. Feed your economy by getting hit.Source: Game Truth. Servitors are your Cognition battery — the more they get shot, the more you can spend.
A-Tier: Immortals (Necron)Higher damage and range than Warriors. Better armor. Build less Dominion per hit but kill faster.Source: Game Truth. Upgrade pick — more damage per slot but slower Dominion ramp. Mix with Warriors, don't replace them.
B-Tier: Tech-Priests (Mechanicus)Hero units that activate Canticles. Lexmechanic tree gives passive Cognition. Dominus tree boosts damage. Keep them behind cover — hero death fails the mission.Source: Game Truth. Powerful force multipliers but fragile. Protect them.
B-Tier: Enginseer (Mechanicus)Healing and support. Keeps your frontline alive. Less flashy than damage dealers but prevents cascade failures.Source: Game Truth. Support units are undervalued by new players. One Enginseer can save a run.

Recommended Squad Compositions

Mechanicus Starter Squad

1-2 Servitors — frontline, generate Cognition by getting hit

2-3 Skitarii Rangers — backline, generate Cognition from range

1 Tech-Priest (Lexmechanic) — passive Cognition per turn

1 Tech-Priest (Dominus) — raw damage output

1 Enginseer — healing and support

Cover-dependent. Spread units across multiple positions. Protect your Tech-Priests.

Necron Starter Squad

3-4 Necron Warriors — core infantry, build Dominion

1-2 Immortals — higher damage, less Dominion per hit

1 Canoptek Wraith — bodyguard, teleport to save allies

Vargard Nefershah — mid-line commander, never frontline

Aggression-first. Destroy enemy cover. Push Warriors into exposed positions. Wraith stays near leader.

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Frequently Asked Questions

Q: What are the best units in Mechanicus II?

Necron Warriors and Skitarii Rangers are the backbone units — reliable, efficient, and essential for building your economy (Dominion or Cognition). Canoptek Wraiths are mandatory for Necron leader protection. Servitors feed Cognition for Mechanicus by getting shot.

Q: Which faction has better units?

Neither is strictly better — they play differently. Necron units are more aggressive and self-sufficient (Reanimation Protocols). Mechanicus units rely on cover and support synergies. Your first campaign faction should be Mechanicus — it's more forgiving while you learn unit roles.

Q: What should my first squad look like?

Mechanicus: 1-2 Servitors, 2-3 Skitarii Rangers, 1 Tech-Priest (Lexmechanic), 1 Tech-Priest (Dominus), 1 Enginseer. Necrons: core of Warriors, 1-2 Immortals, 1 Canoptek Wraith, Vargard Nefershah mid-line.