Vampire Survivors

The new stage, 'Astral Stair', is near the bottom of the list and accessible immediately. There are three relics to collect in it, and an achievement for each. This stage can be a bit confusing at first if you don't know what you're doing, because it's just a small vertical section and all of the items are way off to the right. I've included a screenshot of the map below so you can see what the stage actually looks like before you collect the map. Basically what you need to do is align yourself vertically with the top, middle, and bottom islands off to the right, and on the LEFT side of the starting area will be a door you can touch to teleport to the island to your immediate right. From there, you can head right and into another door to teleport right again, and repeat until you reach the rightmost island where a relic is. Grab it, then head back through the doors to the left until you're back to the vertical starting area. You can see in the screenshot below that there are five rows of islands off to the right. There's a relic on the top row, the middle row, and the bottom row, so those are the only three paths you need to take to get each of the three relics for this achievement. Use Sigma if you have her, and you may want to level up a couple times first just because enemies actually start with pretty high health and there are a lot of them, and then proceed to explore and get all relics. Once you have all three, quit out to unlock all three achievements.