A good start
For your first game, this is pretty good, but it was way to easy. You can get through the whole level without getting hit once.
Maybe put more enemies or fewer powerups. Also, since this is a platformer, maybe add some gaps that need to be jumped over.
well ... you could onyl go in 1 way and .. it was the same over and over again .. so it is kinda boring
Good scripting, but visual execution might be better.
And music and sounds... Why it fully absents?
Well, you did good work. I want to see more games from you.
just add some music and sound and add levels and I think it would be a pretty good game.