Just to note, a lot of times a place that seems like you can land on it is not landable. Maybe make it a bit more noticeably different than the environment. (Considering there was an enemy on it, I assumedi t was possible to land on it).
1. It said 3 lives but it only counted as one.
2. You need some sounds... very easy to implement. I don't see why no one ever bothers.
3. More graphics.
Worst glitch ever. Half the time when you pause, it will keep running when you unpause for about 5 seconds. I did that right at the boss. Guess who lost?
It's okay; most of the levels were way too easy, I could just pump my cannon full and choose an angle, restart, move the angle up slightly and be done with it. I'd like more strategic / puzzle elements to it.