Incredibly difficult. It will take at least 2 hrs to get past stages 10-12. I know that the game was tweaked to make it easier which means I would hate to see what it was like before. I'm sorry but when three stages are easier than the last two there's something wrong. This game looks like it wasnt even tested before release. When a Angry blue jack moves as a result of being hit with a board or rock it should blow up but it doesn't. A direct hit or near direct hit is required to blow it up. This means players will be pulling their hair out trying to hit all 6 with 4 rocks and hoping that a fall from the top level will blow some up which doesn't happen all the time.
I know the last 3 stages have medals worth 100 points but it wouldn't it have been better to lower the difficulty and lower the medal points? Especially since the last three stages are the easiest compared to stages 10-12
Thankfully I am finally done with this.