Here’s some math on this, by the way:
Achievement Math (Trigger Warning: Awful Dev Decisions)
Keep in mind that the first Epic level will require one medal of matching rarity, but the second and third will require two and three medals of matching rarity to achieve Gold Elite Level on. You can also use one medal of the next highest rarity.
Depending on if and how you may try your luck, you will need to spend anywhere between 300 and 1800 Medals to do this. This equates to between 2700 to 16,200 Tokens, or between 1,080 and 6,480 Explore Runs at Difficulty 12.
That’s between 6,480 and 38,880 Explore battles at Difficulty 12. And that low number is if you’re lucky with that 33% chance to gain Gold with only one Medal (or if you use higher rarity medals, though that’s hard to account for mathematically).
For Souls, we have 10,000 for Bronze, 20,000 for Silver, and 30,000 for Gold, PER MEDAL.
100 Bronze spends, 100-200 Silver spends, and 100-300 Gold spends means between 6,000,000 and 14,000,000 Souls.