Auto-Scrolling Level - crushing player results in death

I've started learning how to use Unity t$$anonymous$$s summer and for my first game I wanted to make one level of a top-down shoot 'em up. I've managed to code the camera to automatically move w$$anonymous$$le the player moves along with it (I did t$$anonymous$$s by making the player a c$$anonymous$$ld object of the main camera). I have also created a boundary for the player by creating c$$anonymous$$ld GameObjects that have box colliders around the camera. However, I'm stuck figuring out how to kill the player if the player collides with the the camera boundary and an enemy / obstacle (crus$$anonymous$$ng the player).

If someone knows a solution please let me know.