Me also and couple of levels before where you get achievement Power's out... after riding a lift up it says that when you break the glass there is one collectible right by the computer but if you destroy the computers there's another one almost next to the first which isn't listed in the guide.... and I've found another one not in this list, on some previous level but can't remember which one (It was with Penny and level was jungle/ruins like)
Originally Posted by tjayars
I did get a fourth upgrade on the demolition level. It was a power? not a health. I believe it was the forklift in the lower right.