Augmented Achievement in Halo Infinite
Earn 3 stars in 5 Tier 3 Weapon Drills
This achievement is done under Academy > Weapon Drills. For whatever reason, this achievement unlocked after earning 3 stars in only 3 Tier 3 drills.
You don’t have to complete previous Tiers to jump into Tier 3. Basically you’re looking to rack up as many kills as you can in the allotted time. Multi kills are worth more points and accuracy does not appear to be penalized.
Rocket Launcher (M41 SPNKR) and Skewer are probably the easiest.
Rocket has huge splash damage and the Skewer only requires you to kill 7 enemies. Needler is another easy one since it hones in on enemies and supercombines.
Note: It looks like this achievement may unlock after 3 star-ing any 5 weapon drills. Can anyone else confirm?