Call of Duty: Black Ops III

GLITCHED

Some people are reporting that this trophy will not unlock for them despite fulfilling the requirements for the trophy. However, recently it has been shown that playing the game Ranked sometimes fixes the issue (thanks Lachz for the info). Another possible reason for the glitch is that the time clock doesn't work sometimes. Make sure you get the 5 minute bonus to know if it works.

This is quite a difficult trophy to obtain so I recommend playing with 4 people as you have more entrances to cover and even though there are more enemies, you will kill them faster.

You need to complete Round 20 with 32 minutes and with the right strategy, it's definitely doable. My group of 4 managed to finish in 27 minutes on our first attempt. The prize for completing this is a Fury’s Song melee weapon, which you can claim on the bulletin board at the bunker entrance (next to Mule Kick) for 500 points. There are also time attack bonuses for Round 5 and 10 as well (5 minutes and 13 minutes respectively), so you can use these to determine if your group is on pace to complete in time.

If you read Step 3 of the Walkthrough in the Roadmap, you will see a list of Gobblegums I’d highly recommend equipping. The most important for this is Kill Joy so you can spawn an Instakill powerup whenever you need one. This is invaluable in killing enemies as fast as possible. Another good choice is Dead of Nuclear Winter, which spawns a Nuke powerup.

The important thing is to not open any doors around the map. Staying in the spawn forces all zombies to spawn there, which lessens the time you need to wait for the zombies to reach you.

At the start, each player should go to grab a gobblegum from the machine. Depending on the gums obtained, use them whenever the situation deems necessary. Don't waste Nukes or Instakills on the first 3 rounds, only use the knife or pistol. Buy the RK5 or Shieva when you get enough points. Also don’t overlap any powerups! Like don't waste a Nuke when Instakill is active, or if someone is using a Death Machine, don’t bother using gums. If you get an On the House gum, use it to give everyone a free perk. Once everyone gets Juggernog (luck based), you will be a lot safer in later rounds.

Try to cycle through gums player by player so if 2 people get Kill Joy, let one person use theirs up first so they can attempt to get another gum sooner rather than later. The more players there are, the more chances you have to consistently have good powerups. You will have more than enough money to keep trying for gums after round 10 anyway.

Once you complete Round 20, the trophy will pop.

Also note that if you don't want to waste all those gumballs you used for this trophy, you can quit to the XMB by closing the game. It will keep all your gumballs, as well as the XP earned and any Divinium you obtain. Literally nothing bad can occur from doing that other than possibly losing out on a high score for the leaderboards, if you care for that sort of thing.