Warhammer 40,000: Space Marine 2 Patch 9.0 – Full Notes, Siege & Weapon Changes

Warhammer 40000 Space Marine 2 Patch 9.0 has officially gone live across PS5, Xbox Series X|S, and PC. Dubbed the Quality of Life Update, this release brings sweeping adjustments across PvE and PvP, including a massive melee weapon overhaul, Datavault improvements, Siege Mode balance tweaks, and important stability and bug fixes.

Warhammer 40,000: Space Marine 2 Patch 9.0 – Full Notes, Siege & Weapon Changes
Warhammer 40,000: Space Marine 2 Patch 9.0 – Full Notes, Siege & Weapon Changes

From reworked class perks to expanded weapon choices and smoother progression, Patch 9.0 fine-tunes the experience for Space Marines taking on Tyranids, Chaos, and competitive battles alike.

Datavault & New Content

Patch 9.0 expands the Datavault system to make rewards and in-game lore easier to track.

  • New Siege Ordeals introduced for fresh PvE challenges.
  • Trygon entity added in the Tyranids tab, offering more bestiary depth.
  • Datavault reward screen redesigned for improved UX and future content expansion.

These changes give players clear long-term goals and make Datavault progression more rewarding.

Major PvE Weapon Overhaul

The largest part of Patch 9.0 is the complete rework of PvE melee and firearm weapons.

  • Melee Weapon Progression now follows clear rules:
    • Balanced weapons = moderate speed/damage
    • Fencing weapons = fastest but weakest
    • Block weapons = slowest but strongest
  • Relic-tier melee weapons now strictly outperform Artificer-tier weapons for clearer progression.
  • Firearm Rebalance Examples:
    • Bolt Rifles & Carbines: Clip size and reserve ammo increased, with improved recoil control.
    • Stalker & Sniper Rifles: Headshot multiplier increased to 2.3x for higher skill reward.
    • Heavy Bolters & Multi-Meltas: Reduced heat buildup and faster venting for sustained fire.
    • Inferno Pistol: +15% base damage, now a dedicated crowd-control tool.

These stat changes make underused weapon versions viable, adding meaningful loadout choices for all classes.

Class Perk Reworks

Classes receive substantial perk updates to improve combat flow:

  • Assault Perks:
    • Winged Fury: 100% bonus melee damage when sprinting/dashing, with 7m AoE and 5s cooldown.
    • Hammer of Wrath: Grants 30% ranged damage reduction and knockback immunity for 15s after Jump Pack use.
    • Act of Attrition: 10% → 15% damage bonus.
    • Smiting Angel: 10% → 25% damage bonus.
  • Heavy Perks:
    • Thermal Boost: Now grants +15% ranged damage at 50% heat or half magazine.

These perk changes make Assault and Heavy classes far more reliable, especially in high-difficulty PvE and Siege Mode runs.

Siege Mode Changes

Siege Mode now offers smoother progression, cheaper shop costs, and clearer wave scaling:

  • Shop Adjustments:
    • Guardian Relic: 300 → 200
    • Armor Kit: 60 → 30
    • Dreadnought: 1500 → 1250
    • Guardsman Tier 4 & 5 cost reduced
  • Difficulty & Enemy Waves:
    • Guardsmen HP/Damage boosted by +50% on Normal, +100% on Hard
    • Dreadnought timer increased to 5 minutes
    • Wave cycles predictable: Every 3rd wave spawns 1–2 Terminus, every 5th wave spawns 2–3 Terminus

These changes make Siege Mode less random, rewarding strategic planning and resource management.

PvP & Progression Updates

Competitive players also see meaningful improvements:

  • Max PvP level increased to 44 for extended progression
  • Weapon pool expanded for all classes:
    • Tactical: Combat Knife, Plasma Pistol, Heavy Bolt Pistol
    • Assault: Power Sword, Plasma Pistol
    • Sniper: Instigator Bolt Carbine, Heavy Bolt Pistol, Marksman Bolt Carbine
    • Vanguard: Marksman Bolt Carbine, Heavy Bolt Pistol, Bolt Carbine
    • Support: Heavy Bolt Pistol
  • XP required for rewards reduced for faster progression
  • Private lobby and matchmaking fixes improve online stability

This refresh makes PvP more accessible for casual players while rewarding grinders with new levels.

Combat Quality of Life

Moment-to-moment gameplay feels better thanks to QoL improvements:

  • Anti-Stunlock Mechanic: Successive heavy hits reduce stun duration to 80%, then 60%.
  • Assault invulnerable during ground pound landing, preventing cheap deaths.
  • Improved control responsiveness and fixed stance-reset issues with Power Sword and Plasma weapons.

These changes give players more control and survivability in chaotic battles.

AI, Bug Fixes & Technical Improvements

Patch 9.0 addresses critical bugs and AI inconsistencies:

  • Neurothrope beam damage fixed
  • Lictor invulnerability bug resolved
  • Cultist Sniper double-shot issue fixed
  • Plasma Incinerator charge reset and VFX orb glitches resolved
  • Technical Fixes:
    • Crash and stability improvements across all platforms
    • Matchmaking and network performance enhanced
    • UI, animation, sound, and localization fixes applied

Players should experience fewer disconnects and smoother co-op/PvP sessions post-patch.

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Patch 9.0 is a massive quality-of-life update for Space Marine 2, touching every major system:

  • Datavault expansion with new Siege Ordeals and Trygon
  • Comprehensive PvE melee & firearm overhauls
  • Class perk reworks that make Assault and Heavy more fun
  • Siege Mode balance tweaks for predictable and fairer waves
  • PvP progression and weapon pool expansion
  • Combat responsiveness and stability improvements

If you’ve been waiting to jump back into the fight, this patch makes Space Marine 2 more polished, more balanced, and more rewarding than ever. Play Now!

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