Honestly there is not much else to say, maybe you could make the obstacles more different from each other, as for now they kinda do the same things (humans are like chickens, cones are like stop signs etc) but for now just concentrate on fixing the problems more than adding new feature, even though if you want a suggestion for a future idea, you could add some sort of leaderboard, even though it'd require a server or some odd p2p technique, so I don't think it would be good unless youìd be trying to commercialise the game, in which case it would work.
By the way would you mind trying and rating my game?
Sorry, my english is not the best.