The theme of a dude with not one... but two hammers.

Rizon Fortress - Mario's Mystery Meat OST

Sonic The Hedgehog 2 - Oil Ocean (OPL3 4OP Remix)

Buy the soundtrack and support the composer at https://moonsailor.bandcamp.com/album/rivals-of-aether-ii-soundtrack-arrival

I take no claim to Jake Kaufman's work, it's on bandcamp for free. Check it out:
https://virt.bandcamp.com/album/shovel-knight-king-of-cards-ost