Nakano15
Terrarian
Based on Terraria wiki, there is no restriction for use of the medallion, beside being at night.I've found an issue, when I start up a world, I get FPS that is totally acceptable, but it seems to decrease over time. After 30 or so minutes I get 2fps, and I have to restart terraria to fix it.
Also the pumpkin moon should not be available pre-hardmode, as on free mode I got to wave 6 with pumpkin armour and a magic stick.