Steam Deck: set the compatibility tool to Proton Experimental, and use the dpad on menus, the joystick is inverted right now.
Achievements actually talk to Steam now, so the ones you already earned should pop.
Roguelike extra life and seismic work like they should, and there are a few new upgrades.
Leaderboards for highest Classic level and overall score are in the game.
More hats, a better ragdoll when you eat it, music that changes by level, and it launches fullscreen.