For the level, I've used the torches (the new version is now in the above post). That's the best object to use anyway, since it makes it look even more like "Prince of Persia" (which is the theme for this level, in case anyone couldn't tell). I just wasn't expecting the torches to work as they're so narrow, but heh, it turns out that they snap to the edge of a grid cell, conveniently placing them directly under the wall above.
Yes, I assumed the steam vent was a deadly object -- after all, the ONML Snow style features a very similar-looking steam vent that is deadly. I do still want to have a flamethrower available, not for this level but in general. Palette-swapping the steam vent might be a start, but really, the flamethrower should be much bigger.