Halo Infinite: How to unlock the Mix Things Up achievement

halo infinite mix things up coop
(Image credit: 343 Industries)

Co-op mission replay is now available in Halo Infinite and you and your Spartan pals can work together to get the Mix Things Up achievement. As co-op was only added this week after a pretty lengthy delay, this particular achievement is bugging out for some players so you might need to try again—and again—to get it to unlock.

In this guide, I'll talk you through how to get the Mix Things Up achievement and what weapons you're looking for.

Halo Infinite: Mix Things Up achievement 

To unlock this achievement, you need to get a kill with every available weapon and grenade on the Banished ship in the first mission, Warship Gbraakon. There are 11 different weapons to use, including a plasma cannon you can pick up and three different grenade types. Here's each weapon type you're looking for, and it's worth noting that the assault rifle and MK50 Sidekick also count here: 

  • Plasma pistol 
  • Needler
  • Mangker
  • Pulse carbine
  • Frag grenades
  • Bulldog
  • Spike grenade
  • Plasma grenade
  • Plasma cannon
  • BR75
  • Ravager
  • Hydra

You'll find these weapons in weapons racks, near your spawn position, from enemy drops and floor loot. Be sure to check the hangar thoroughly and near the elevators to find all the weapons you need. The hydra can be found at the end behind some crates to your left after you manage to cross the gap.

It only takes one person to complete this achievement and everyone gets it, so let yourself be carried to victory if you miss out on using a weapon. As this achievement and several others are still a bit buggy, you might need to rinse and repeat a few times before you get the achievement to ping.

Guides Editor

The first three games Lauren played on PC were Star Wars: X-Wing, Zoo Tycoon and Barbie Fashion Designer, which explains her love of all things space, strategy and aesthetically pleasing. Lauren recently took over as PC Gamer's Guides Editor after three years of writing many dozens of Destiny 2 guides at VG247, as well as casually trying to shoehorn in The Witcher 3 articles wherever possible. When she's not trying to force everyone to play as a Warlock in Destiny 2, Lauren is either mastering her SEO abilities to help smash the competition, or patting one of her red sons.