Tyl Regor's custom axe and shield are how he likes to eliminate 'frustrations'.

The Ack and Brunt is an axe & shield set used by Tyl Regor that boasts a high critical hit chance in exchange for a low attack speed. It also has the unique ability to absorb elemental attacks on block to empower the weapon's next attack.

Manufacturing Requirements
Time: 24 hrs
Rush: Platinum64 35
MarketIcon Market Price: Platinum64 150 Blueprint2 Blueprints Price:Credits6415,000
Chem Lab Research ClanAffinity64 3,000
Time: 72 hrs
Prereq: Ogris
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This weapon deals primarily Slash b Slash damage.




  • Blocking elemental damage attacks creates a stack that increases the damage of the next attack by 17.5% stacks. The effect can stack up to 4 times before being consumed, increasing the damage up to 70%.
  • The damage bonus increases additively with elemental mods, which can also combine with elemental mods from the weapon to became a combined elements.For example, if your Ack & Brunt is using Electricity b Electricity damage, blocking Toxin b Toxin damage will combine it into Corrosive b Corrosive damage.
  • Elemental damage taken by nearby allies via Mod TT 20pxElectromagnetic Shielding can be converted to stacks.


  • The Ack & Brunt's high critical hit chance makes it ideal for Mod TT 20pxBerserker, which can be used to compensate for its slow attack speed.
    • (Mod TT 20pxPrimed) Mod TT 20pxFury can be used to further increase the attack speed.
    • Mod TT 20pxFinal Harbinger can offset the Ack & Brunt's low attack speed with its quick combos.
  • Using the Ack & Brunt with Mod TT 20pxFinal Harbinger, Mod TT 20pxBlood Rush and/or Gladiator Mods allows players to quickly gather hits for the Combo Counter, rapidly boosting the Ack & Brunt's critical chance.
  • Absorbing enemy attacks allows players to almost double the amount of damage they can deal.
    • This is useful when focusing on taking down heavy units in a crowd.
    • Do note however that stacks are expended if an enemy melee attack is parried.
  • (Corrupted) Bombard rockets can add up to two stacks of elemental damage, allowing players to collect stacks faster.


  • This is the weapon of choice for Tyl Regor following Update 17.0, though instead of holding the weapon, Tyl Regor is able to attach the axe and shield to the ends of his cybernetic limbs in place of his GrnArchHand Knux hands. Regor, however, explicitly refers to Ack as a gavel.
  • Tyl Regor uses a different design for the shield, as it is normally part of his helmet/headdress (or perhaps vice-versa). The Tenno version presumably adapts the shield to collapse so that it does not take up as much room when stowed.
  • The text on the inner part of the shield translates to "Meat Protector".



  • Ack & Brunt in Codex
  • Spartaclibur
  • Rhino Prime with Ack & Brunt

Ack & Brunt Skins

Patch HistoryEdit

Update 26.0

  • Damage increased from 50 to 149.
  • Range increased from 1 to 2.5.
  • Slam Attack increased from 50 to 447.
  • Slide Attack increased from 107 to 149.
  • Parry Angle set to 70.

Update 19.0

  • Blocking with the Ack and Brunt now absorbs elemental damage. Example: Block Electrical damage, gain + Electrical damage on top of base attacks.

Update 17.1

  • Fixed Ack and Brunt’s shield open/close transition not playing properly.
  • Fixed some attacks from Ack and Brunt not flowing properly.

Update 17.0

  • Introduced.

Last updated: Update 26.0

See AlsoEdit

  • Tyl Regor, the inventor and user of the Ack & Brunt.
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