Peggle 2

First unlock Gnormon as a playable character. Once unlocked choose level 10 under the Peggle Institute levels. Choose Gnorman, what you will be looking for is a green circle peg (unarmored) in the middle of the armored pegs. (reload level until they spawn there) You must hit the green peg without destroying any of the block pegs under the armor. ( better if first ball also lands in bucket but not needed). Now that you have Gnormans special choose a side to power slide down. This will destroy most of the orange pegs on the level and give you the maximum amount of balls. (also better if you power slide down the side that has a green peg under armor if spawned) This will leave you with one more Gnorman special shot which should be shot how you see fit to eliminate the rest of the orange pegs,

Finished with 15 balls and took a couple of tries but it was a very easy way to get the achievement.

Maka91 video solution of my guide below.

Unlock Gnorman as a character and go to the 7th level of the 1st world:

'Happy Happy Hedges', in the 'Peggle Institute'.

Follow the video guide below. Note that it may require some restarting to ensure you get the right pegs where you want them (such as a purple peg and a green peg somewhere where you'll hit it on your first shot).

Other than that, stick with the same formula and you'll get there with a little trial and error. Took me 5 tries.

If you have the Jimmy Lightning Master Pack DLC then the first level in there is good for getting this achievement.

One of the level challenges is for finishing with 10 balls so it's pretty much set up for this by default. When I unlocked it I had 14 balls after the first shot and 2 orange pegs to clear up. I guess you need a little bit of luck but it seemed fairly easy for me.

EDIT : This was done using the new Peggle master Jimmy.

Good luck

For those that don't know you get extra balls in peggle by getting 25000, 75000 and 125000 points in a single shot (not counting style points) and by landing the ball in the bucket. Meaning it is possible to increase your ball count by +3 in a single shot.
You lose 1 for taking the shot, gain 3 for scoring over 125000 points and gain 1 for landing the ball in the bucket.

Therefore the easiest way to get this achievement is to clear the orange pegs as fast as possible while scoring high.

I recommend using gnorman on the 2nd level of the 2nd world, I just completed this in 3 shots myself. Try to hit green without destroying too many many pegs, then your 2nd shot should clear most of the pegs and award you with some extra balls. Provided you hit a green on this shot as well (or two on your first) the 3rd shot should clear most of the rest of the orange pegsand award you some more balls.

You can maintain the number of balls you have by hitting one peg at a time and rebounding into the bucket if you get above 12 balls and have only a few pegs left, if required.

Due to random peg placement there cannot be a surefire way and getting this achievement but the method i have suggested should give most people a chance provided they get a bit of luck

This is "one of those" you'll get with the right info, a plan, skill and ahem yes a small bit of luck. I just got this on Peggle institute level 6 using Gorman.

The video is recorded by me using the Xbox one dvr.

Takes a few attempts, but I got it really easy using on the first Jimmy level. Keep restarting until you have a green at the top then just fire it off. You should always get the full extra balls from points alone then more from the balls going into the bucket. After that its just about picking off the last few oranges.

At the end of the day its a luck thing but this gives you a good shot at getting a good layout after that first green.