Maybe a few things to add:
Pits / Quicksand- Teleport you or kill you
Water- You stop on it once, then it disappears
Move-able Blocks- You hit them, then you stop the same as any normal block, but the block continues in the direction you were traveling
Monsters- Idk..they follow you and don't let you go backwards...or kill you
Dynamite-Blow up certain rocks, just have 1 stick and 2 different rocks, so they need to choose the right one.
Just a few.