I got this achievement easily in one playthough, and I'll go ahead and tell you how I got it. This is much of a "guide", as it is tips.
First off I bought the weapons and dress pack off the marketplace (160MSP). Then I played through the whole game with the Caterpillar dress. This dress enables shank vision 24/7 without going into shrink mode. Very helpful to find hidden areas and jumping on all those platforms. Not only that, but it let me know pretty much where the hidden pigs were, the ones you have to take secret paths to find.
Also, remember that some pigs are only visible in shrink vision. Like the first two of chapter 4, when you're jumping on all the cards. An the pig in chapter 2 right after fighting the Colossal Rune for the first time. So the dress is also very helpful for those ones too.
Also, I found it best to have the gamma set to 3.2. That let's you see all the shrink vision symbols, paths, platforms, an pigs easier.
Hope this helped some of you guys out! Happy gaming!
EDIT: Just found this guide. Best guide there is. :)
http://www.xbox360achievements.org/forum/showthread.php?t=31...Makes sure to give credit where credit is deservered.
All credit for writing the walkthrough go to II OE II from xbox360achievement, I take no credit for this.
Happy gaming!