Can you please outline which 6 assets you used from OpenGameArt.org ? Otherwise the game may not be eligible and will unfortunately have to be removed from the jam. Kind Regards.
Viewing post in Dungeon Master jam comments
Based on his credits, I think these should be the ones.
https://opengameart.org/content/chippey
https://opengameart.org/content/cg-upted
https://opengameart.org/content/chipscape
https://opengameart.org/content/space-ranger
https://opengameart.org/content/god-like-character