DOOM Eternal

This achievement requires you to complete to first Horde Mode Mission, Cultist Base. Start a new Horde Mode game from the main menu and select any difficulty (I'm Too Young to Die is the easiest).

All missions include three arenas, two bonus rounds, one blitz round, and one traversal round. The bonus rounds are not required to unlock this achievement.

During the arena rounds, there will be Bounty Demons that you can kill in a short amount of time to unlock extra encounters in these arenas. The Bounty Demons are marked with gold symbols that eventually turn to silver and then to bronze. The fastest and easiest way through this mission is to ignore these high-value targets until the time runs out, thus preventing you from accessing the unnecessary extra arena encounters. It's not the end of the world if you kill them, but it will make the process longer. At the end of each arena, you will be awarded a random weapon.

The blitz round tasks you with killing a certain number of demons within the time limit. However, the fastest and easiest way to complete this achievement is to not kill enough. Just try to survive and avoid killing the demons where possible in order to skip the bonus round, thereby making this achievement take less time. Once again, you can kill the demons if you wish, but it will make the process take longer.

The traversal round will ask you to complete a platforming puzzle within a certain time limit. The fastest way to earn the achievement is to just sit at the start and wait for the time to run out in order to skip the bonus round.

After completing the third arena, the achievement will unlock. If at any point you die and lose all of your extra lives, you will have to start your run again.