You earn this achievement by scoring more points than the target score on all 150 levels (10 levels x 15 zones). The target score is always shown in the upper right corner of the screen. You *may* be able to get this without playing on Expert, but most levels require you to play on Expert to earn the A+ rating.
My solution for all of the levels needed to get this achievement are here:
http://implode.4shared.com/For some of the solutions, I noted the values of each bomb explosion in the picture comments. I didn't do that for a lot of the levels, but you might check that if you're having trouble.
The achievement pops when the score shows up on 15-10 (or the last level you play to get all A+ ratings), which is when it decides that you have successfully blown up the building and determined your score.
In some cases, you may not be able to duplicate my exact results, since being off by one pixel can completely change the level. Here are a few hints to keep in mind:
If you're having trouble with one of the solutions, move bombs by one or two pixels. It make a difference!
If you're having trouble with a solution where bombs are placed right next to each other, try placing them there in different orders. I found that placing one affects where you can place the other, which affects your score.
Watch the scores for each bomb. Placing another bomb may increase your score if you can beat the unused bomb bonus.
Look at different solutions to see if there are patterns. Look at the number of bombs used, look at where they're placed, etc.
As mentioned in other solutions, you can try looking here for alternative solutions:
http://beatimplode.com/ (based on iPhone, so solutions can be different)
http://www.xbox360achievements.org/forum/showthread.php?t=33...http://www.xbox360achievements.org/forum/showthread.php?t=35...http://www.xbox360achievements.org/forum/forumdisplay.php?f=...Thanks to beatimplode.com for putting their site together. Thanks to all of the contributors to the xbox360a contributors for those threads.
All of the solutions at
http://implode.4shared.com/ were generated by me.