Set "Set angle=Yes" in Bullet properties (on the left bar)
Also, the default angle for sprites in Construct is 0 degrees, which is left-to-right. Make sure your images in sprites are oriented this way, it will make everything easier for you in the future.
If your ship has the same image when moving up/down/left/right, then you don't need different animations. I fixed and optimized your project, take a look: