Enjoyable, yet frustrating
This is a great concept which turned into a fun game. I love the use of morse code, and the gameplay was excellent for the short amount of time you had to work on it. Very well done. I do have one suggestion however, if you want to continue work on this game or perhaps take the idea to a new submission.
Remove the extra animations. I think this is the source of the lag everyone is experiencing. The waves coming up on the shore, the smoke in the background, the building on fire, they all are causing some serious lag, even at the lowest quality setting. I think this is the case (please forgive me if I'm wrong, I know NOTHING about programming or coding. I may be totally off base here) because my lag was worst in the urban level, with the building on fire. That level had the most background animation and I couldn't send Mr. Doe a message to save my life. I started carrying around a few extra grenades so that I could attempt a quick .. --. to get out of there quickly. (Side note: Every button used in this game now is burned into my memory. >.< Morse code is going to wake me up at night. beep beeeep. *shudder*) If you included a quality setting which paused or removed the background animation, I think many people with computers like mine would have a much more enjoyable experience with this game. :)
Again, very enjoyable, I played through even with the lag because I wanted to see how you ended it. Very funny ending as well. Well done all around. :) 4/5 & 8/10.