Urgent! The Trial of Agrail!

They already exist. You just need to extract them from the data. This is easy to do. You need to create a map in the editor that is the same size as the one you need. The Trial of Agrael is a medium-sized map with a dungeon. Next, open data.pak with any archiver. You need the path Maps/SingleMissions/A2S4/. There you need files like map.xdb, GroundTerrain.bin, UndergroundTerrain.bin, and A2S4(Script).lua. Next, open the created map as well as the data using an archiver. The path is Maps/SingleMissions/map_name/. And finally, replace map.xdb, GroundTerrain.bin, and UndergroundTerrain.bin with the files of the same name from data.pak, and also add A2S4(Script).lua. That's it, now the created map is the Trial of Agrael.

Added 9 minutes later
Oh yes, and you can't just add the script like that. It's better to select all the text in A2S4(Script).lua and paste it during editing.