Ah cool! Glad to see that someone else has heard of Qbasic! :)
The game has some explosion animations, but you're right, the enemies basically just disappear from the screen when shot down. Animations are still on my "to-do" list.
Difficulty seems to be a recurring criticism so future versions will have a difficulty adjustment. It's hard because on the one hand, you have really casual top-down shooter players and on the other you have the hardcore shmuppers that love bullet hell, high scores and 1CCs.
Thanks for playing and mentioning Construct! I've been wondering what would be a good game engine coming from a Qbasic background.