Nice shoot 'em up paying homage to the games of the early 1980s. The sprites are cool. Each level I played so far (up to level 3) has had a new feature which increases the difficulty of the game and includes one or two surprises. The biggest surprise for me were those pesky rockets that flew across the screen. The loading bitmap is cool.
What would be nice is to have something like an arcade style attract screen with a title screen logo, a hi score table. Also add some in game sound effects. Unfortunately I didn't like the music. Despite this, you have made a great effort making this game in TRSE. I have not even had time to master TRSE.