aww man that sucks, he was shaping up to be an awesome figure it looks like.
Let me guess, you used enamel paint? Don't blame yourself, I started out with enamels as well... and sometimes they just don't want to work on these new style figures and their rubbery plastic.
It's pretty easy to fix though. Get an old rag and dip it in your paint thinner/ terpentine. Then gently rub off the enamel paint. Don't use too much terpentine, and definately do not soak the figure or pieces in it, as it will eat away at the plastic if your not careful.
OR... you can take a can of clear coat spray paint and paint the entire figure in it. This will dry over the tacky enamels and cure into a protective layer. I did this on one of my figures which I accidentally mixed enamel and acrylic paint together! The paint didn't dry completely but was dry enough that it wouldn't come off. SO I spray painted it and sealed it all in.
good luck!