900 bonus on 34, it is rather easy: use the green one far to the left, put the long pole on top, the yellow cross on the other side (on top of the pole), and add the 3 blue balls :)
Finally all badges, the only level that caused frustration was 18 due to buggy clones. and to djkittn: the saving works flawlessly at my computer... Anyway great game, great concept: 4/5