Minecraft Legends

You actively need one of each tower in your main base/hub, The Well of Fates. They must all stay built until all 15 towers are built.

You build each tower (All take prismarine and most take gold as well to build, materials acquired from attacking piglin outposts and bases) in the predetermined squares (four of them surround the main tower.)

You need a total of the following to create each tower:
2100 stone
2150 prismarine
370 gold
25 coal
25 diamond
25 red stone
25 iron

-Improvement: Gather Iron (100 stone, 100 prismarine)
-Improvement: Gather Coal (100 stone, 100 prismarine)
-Improvement: Gather Red Stone (100 stone, 100 prismarine)
-Improvement: Gather Diamond (100 stone, 100 prismarine)
-Improvement: Cure Netherrack (100 stone, 100 prismarine)
-Improvement: Allay Storage (100 stone, 100 prismarine, 10 gold)
-Improvement: Abundant Allays (100 stone, 50 prismarine, 10 gold)
-Improvement: Banner (100 stone, 100 prismarine, 25 Gold)
-Improvement: Flames of Creation (200 stone, 200 prismarine, 25 Gold)
-Improvement: Large Flames of Creation (400 stone, 400 prismarine, 100 gold)
-Improvement: Wake the Firsts [obtained by discovering the first First Golem, a random spawn in the map. Stone is in Meadow biome, Diorite in Jagged Peaks, Brick in Dry Savannah and Oak in Badlands] (100 stone, 100 prismarine)
-Improvement: Shared Village Chests (100 stone, 100 prismarine, 25 iron, 25 coal, 25 diamond, 25 red stone)
-Improvement: Collect Power Towers (100 stone, 100 prismarine)
-Improvement: Expert Carpentry (200 stone, 200 prismarine, 50 gold)
-Improvement: Expert Mason 200 stone, 200 prismarine, 50 gold)

Once the last tower is FULLY built, the cheevo will pop shortly after.

Happy hunting!

The easiest way to do this is to make a custom campaign and give yourself resources. Then place every improvement once except for the upgrades. Both flames of creation are required for some reason though