This is great! The morse code part is really tough to do. I think if you added a .5 sec break between letters, it would be more manageable. It's also easy to find a morse translator, but since you have the hex translator, the morse translator should be added in the future.
Aside from those nit-picks, this is great! It gave me the feeling I had when I was learning ctf stuff with pico8 and such. Very well done!