Doggie Demolition(Bolt then Penny)--3 Gadget Bar Upgrades/3 Power Upgrades/1 Health Power Up/1 Hack Level
1.) When the level start, you will find a Power Upgrade right in front of you.
2.) There is a stack of wood to your right, destroy it to find a Power Upgrade.
3.) There is a stack of wood to your left, destroy it to find a Power Upgrade.
4.) **Note: Can't explain this one, but I think you have to destroy everything in the room, because after I did, a Health Power Up appeared in the middle of the room.
Regarding number 4, it was the forklift on the right of the screen that I destroyed that yielded the final item. But as everyone else has said, it's NOT a health power up but rather a Power Upgrade.
But yes, this guide is just fine. Everything is where it's supposed to be so if you miss something it's just that you were confused by the way he listed some of it. Like someone stated he lists one less number on a certain level than he should despite listing all the items (Detail wise). Like if you're looking at the numbers above each level list, it'll say XX Gadgets/ XX Power/XX Health/ XX Hacks...don't pay attention to those numbers, just read the lists themselves.