Lutz, no matter the difficulty, the rules are great.Thank you! Maybe the runthrough helps you a bit, though it took me some time to win a game at Veteran level that also had some drama. The expansion was designed to have about 50% of failures at Veteran level; on average, that is, the actual results may vary dramatically depending on your dice rolls, and when the dice are against you on the first few rolls sometimes you just have to admit defeat (as we just did on the PBF #10 game on the trampship map).
Some hints: Do not spend APs if you cannot achieve anything positive immediately (this is true for all boards). Try to break or shorten continuous fire lanes, in particular in the engine room. Sometimes it pays to only half-extinguish a few spaces (if that enables you to put more fires out) and clear them later. I often let even the Medic or Rescue FF put out smoke if it is in their way, it costs the same as if another FF has to put out a real fire later.