Encroaching Death 360 has finally been re-re-released with ARCore!
You can find the download link here, but be aware that you'll need to have an Android device with API level 24, and it needs to support ARCore. If the link is broken, then it's likely that the app hasn't been rolled out yet (It usually takes a few hours for a release to take effect).
This was my first Unity project, as well as my first Augmented Reality project, and I'm quite happy with how things turned out. If Google finds something wrong THIS time, it shouldn't even take that long to fix
As a side note: If you're ever having problems where Unity's hitbox zones are incorrect/moving at runtime, you probably need to use a scalable canvas.
Onwards and upwards!