Getting a shotgun there was completely random.If you play on Hard or Survivor difficulties, you'll get random weapon drops from enemies, which means that you can get any weapon from any enemy at any time (excluding the enemies who provide you with fixed weapon drops), if I'm not mistaken. This is different from the Easy difficulty, where enemies randomly drop health packs and bonus items, but no weapons. Random weapon drops are not always a good thing though, like at 15:35, the soldier I knifed gave me a pistol, replacing the rocket launcher I had before, which made the fight with the bomber much longer and thus more difficult.
Actually, entering the airship (if you mean destroying the lid) can be done by turning your plane cannon right behind you and destroying the rockets that directly aim at you. If you switch between shooting at the lid and shooting at the rockets in regular intervals, you can do this quite easily, just get the timing right. Then as for the lasers, it can be quite difficult to get through them especially because some sets of these lasers are placed differently from game to game and they also fire in different patterns. My best tip would be to either save some health for this part or learn all the different patterns (they are not infnite afaik).
@@silverfalcongaming Thanks, I also completed the deathless pass about a week ago. Seriously, it was almost desperate when I was down to my last bit of HP due to a laser attack, but I still finished it.😵