Master at Arms Achievement

  • Master at Arms



    Kill enemies with 5 different heavy weapons during the game

    You need to get a kill with 5 different heavy weapons throughout your playthrough. There are 7 heavy weapons total.


    • M-100 Grenade Launcher – Picked up as part of the story during the intro mission
    • M-77 Missile Launcher – Researchable prototype
    • M-622 Avalanche – Researchable prototype
    • Collector Particle Beam – Can be picked up during the ‘Horizon’ mission
    • M-920 CAIN – Researchable prototype


    •  M-451 Firestorm – Can be picked up during the Zaeed loyalty mission
    • M-490 Blackstorm Projector – GameStop preorder reward
  • help me please...i have no idea how b2 use the m920 cain...i need 2 get a kill withn it but it wont fire...says 80% but wont shoot....what am i doing wrong?
  • I'm having the same problem, can anyone help?
  • I have heard you need 100% ammo so you need full heavy weapon ammo to us it once
  • The M920 Cain worked once for me. I've not gotten it to work since, it just vents like it's cooling off. I think you might have to fully research your heavy weapons to get it to work. Something I did notice that was a bit annoying that when you start a play through on Insanity, after a play through on a lower difficulty level, you get the armour and weapons but not the upgrades. I thought it a bit pointless.
  • Yes, the Cain needs 100% heavy weapon ammo to fire once, but Heavy Weapon Ammo upgrades can get you more than 100% ammo. Read more about it here:
  • ugh i still gotta get the cain. need to find one more heavy weapon upgrade. Hopefully it will be on the next mission(second last one)
  • I just can't seem to unlock this, think the Cain's my problem *sigh* the particle beam is nice though!
  • Didn't get this achievement til I downloaded the arc projector heavy weapon from the extra content and killed someone with it, hope that helps.
  • Yep. Arc projector comes with the game if you buy the trilogy. This one is best done by a weapon storage locker in the middle of a mission. You can even reload after you get your kill if you don't want to waste ammo.

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