EXTRA: Adventures Achievement in Vampire Survivors

For me, the Atlas Gate appeared in the center of the arena in this map at exactly 8 minutes. I have seen reports of it appearing at different times though. Just load up this map with Sigma and turn on Hurry mode to speed this up, then just survive (should be no problem at this point) and keep an eye on the center of the arena for this relic. It looks exactly like the achievement tile. Grab it and then you can end your run to unlock this achievement (no other achievements in this DLC for this map).