GameMaker - Asteroids - Part 3

- What difficulties did you have? 
I didn't really have too many difficulties, since the videos were pretty easy to follow, plus the logic was sound so I could figure stuff out easily too. I did have difficulties while adding extra details, though, specifically when changing the bullet so that it would change colour, and also adding "special" asteroids every set period of time. The coding for the asteroids was also really hard, since there was a lot to consider.
- How did you solve them?
Most of the logic and coding is repetitious throughout the whole game, so I just copied what was done to another object to get my wanted effect. For example, for the colour thing, I just followed how the instructor had changed the asteroid shape, and it seemed to work well. The "special" asteroid was even easier, since all I had to do was create two new objects (a hidden object and the actual asteroid) and copy most of the coding. The only thing I had to figure out was how to loop the alarm, but that was also taught in Catch the Clown. For the actual coding of the asteroid, I got a lot of help, and, after trying quite a few ways, something finally worked.
What did you change in your game to make it unique? How do these changes affect gameplay? I didn't change anything that pertained directly to gameplay. Most of my changes were about graphics. As mentioned before, I added a special asteroid that would appear every few seconds that had more point value, and changed it so that every bullet shot out from the player object was a different colour.
Google Drive Link: https://drive.google.com/open?id=0B6FcJkWYLvxscHZjOTU0Y2dhZlk