If you're playing this on the original 3.00 editor, you might encounter a major bug: the barrels can be literally walked through, allowing for different solutions. Sadly, since the non-open-source build is hideously crash-prone on my system, I can't really use it properly. If you're playing on 3.04 (or whatever the latest open-source version from Aryan is), the level works correctly. If you aren't... well, just assume you can't actually walk through the barrels, even if you can. Try to do it the fair way.
![Wink :wink:](./images/smilies/icon_wink.gif)