No, it is not. I don't even have it myself though. My friend has it, luckily the game allows multiple accounts.
And that's probably why I'm not that good at it yet, I only play it about once a week when I go to his house.
Another thing: I am now on level 42, the Portal Puzzle.
I took the green portal, which led me to a large room with several zombie tanks. There is a button in the middle of the room, but the zombies are guarding it. They won't even leave it to try and kill me! How do I distract them?
EDIT: Oh and for people who want to know the repair wrench had been eaten by a croc-bot. You need a hammer to crack open its stomach and retrieve it.