First of all i wanted to say that this game was really laggy to me, some optimization is really really needed :[
I really love the art style you gave this game, it's one that really stands out to me and it's just really cool to look at :D
I like the ladder mechanic, it's a really unique idea but i think it could maybe use a little more work, but for what it is i would say it is very good and i enjoyed using it!!
Overall it's a nice game with a original art style and mechanic, could definitely use some polishing (and optimization please..) :]