I liked the time-stopping mechanic; it opens up many possibilities for a shmup. I wasn't very comfortable with the controls—it could be just me, but I find it a bit difficult to shoot using the space bar. Moreover, the time-stop button was mapped to the mouse click. I think you could simplify the controls and map the shooting to the mouse button as well; it might be more comfortable. Something happened while I was playing—sometimes I couldn't shoot, and I didn't understand why. I thought it was due to running out of ammo or something like that. I liked the enemy patterns; the game is very cool. Congratulations!