I thought this one was pretty straightforward. Some interesting ideas, but not much of a challenge. I think I spent the most time trying to decide if I should figure out a way to bring the first cube with me or not. The indicator lines just gave away too much of the puzzle.
Thought the puzzle was just fine, medium level. Getting cube through the laser walls was a bit ninja for those who have not seen it before. Interesting use for funnel and timing to activate exit. Well done...Thanks for creating.
Not tight timing as in Underground Corridor...good.
I usually try to keep things at about medium difficulty or slightly above, and sometimes a bit of thinking involved. The way I see it, I want everyone to enjoy playing them. After all, when Valve released the actual game itself, it was about a medium difficulty or slightly above. Valve does not want people to get frustrated and no longer play it. So I kinda go by the same philosophy.