Looks like the game was exported in debug mode.
But, that's just a note.
The background got a bit distracting at times and the music did not really fit in.
But, it's better than no music. And by no means does this mean it's bad. The sound effects were good, sounded like my frog had a laser pistol (pew, pew).
Good job with the game. Could use some polishing on the movement. Not sure how SDL2 works, but it feels like there was an if statement with some else if for the directional movement. Making those else if only an if will make the movement feel more polished!
It was fun, and good sound effects.
Good job!