UNITY & VR USING C#

For my final project I have to write a dissertation and have a system/product alongside it. for the product I am creating a VR experience with a 3 degree of freedom- this should be very simple with movements within the environment and head movement/ tracking in all directions. deciding if utilising full VR headset would be beneficial for achieving her project goals or not, as since the goals seem to be focusing on 3 DOF only, maybe a simple stereoscopic mobile application for a mobile VR headset (like Google Cardboard) would be enough. some accompanying sound effects such as wind and grass would be ideal. All assets and sounds were intended to be copy right free and free to use of the internet as this is a university project.
if possible but not mandatory, if the environment can be made to respond to users movement i.e grass rustling when walking, flowers scattering. The theme for this environment is naturescape with a specific colour theme.
I will include the rubric please scroll to the product section for relevant marking criteria. the aim is to not go beyond 79%.