This was a really interesting idea. Having to decide when to eject your turret early enough so that you don't explode but also late enough that you aren't overwhelmed with enemies with no way to shoot them was pretty fun. I also really liked how the music directly corresponded with the timer. You can tell how soon the turret is going to explode by listening to the music, without even needing to look at the meter.
I did think that some things felt a little rough, like how it was a bit finnicky to pick the turret back up sometimes. The game ending so abruptly when you lose also didn't feel great. I also think some additional sound effects would have been nice. Still, this kind of roughness is understandable for a game jam game.