The Adventures of Elena Temple: Definitive Edition (EP)

This achievement is for completing all rooms in the Golden Spider dungeon. To clear a room, you must collect all coins, place all crystals in their pedestals, and shoot all pots in the room. There are 16 rooms (4x4).

There's only one scroll on this map - the Scroll of Completion. The scroll is required for the achievement and helps you out by showing a check mark on the map for each room you've completed.

The Scroll of Completion can be found above the top room in the second column. To get to the scroll, you must drop the chandelier-like thing on the right side. This requires getting an arrow from the top-right to hit the button on the upper left. To get the arrow through, you must jump when the arrow is in between the round obstacles so the obstacle on the left disappears before the arrow hits it.



Once the arrow gets to the button, you can jump up the "chandelier" and into the scroll room.

From here, just make sure you get a check mark in each room as you go.

In this dungeon, the final room (second from the top, last column) is a little deceptive. The room won't be marked complete until you move to the right (outside of the map) and collect the golden spider. Once you grab that, the check mark will appear on the map and the achievement will unlock.

This is how the map will look and where you will appear on it when you get to the golden spider.