The only thing that caught me off guard, which maybe was an intended feature, was the throwing of the fire extinguisher. I got that I could throw it, but throwing it high enough to actually extinguish flames that were higher up had me second guessing myself.
The first few goes I just assumed the extinguisher didn't work at all until ended up using it on a flame that was unobstructed, and ground level. After that I was able to reason about it.