Conveyor Belts: Hit switches to change their direction.
Muddy Ground: Reduced movement and knockback.
Slippery Floor: Decreased traction and increased knockback.
Unfortunately, I can't figure out how to deal with monsters that fly (greavers, silkwings, howlitzers).
The 'muddy ground' is implemented by the swarm in unknown passage.
Muddy ground would function differently than Swarm Seeds. Swarm Seeds don't do anything harmful to monsters.
The reduced movement would apply to both monsters and Knights standing on the muddy ground. The reduced knockback would apply to whenever a Knight or monster that is standing on muddy ground gets hit. There would be less knockback if you get hit by a Lumber while standing in mud.
The effectiveness of these terrain hazards would depend heavily on the map layout.
How has this not been posted on? Bump!