The art was fun, the use of a non traditional player sprite was an interesting choice but I like it.
The barrels need some major changes to their movement, I found multiple spots where you can just hide out and rack up points forever. Some of the ladders felt more like ramps too, part of the donkey Kong feel is have to press down or up on the ladders. Just walking on the ladder seemed to start the downward motion.
A fun demo, the big cat is a cool dude!