Though this case is rather expensive, it is definitely worth the expense.
I have had this case for a few months now and compared to various other cases I have tried, my experience with how well this case protects my phone is exceptional.
I am not someone that generally puts my phone in situations where it could get damaged however I drop things a lot and recently had my case in a backpack that flipped while canoeing. In instances of dropping the case, my phone has experienced no damage (do to the solid thick plastic back, solid rubber edges and thinner but durable screen protector on the front). When my phone was submerged in my backpack (which was sopping wet) I examined my phone with the case on and off of it afterward and no water damage occurred to the phone whatsoever. The phone was dry while the outside of the case was wet.
I know there are many other cases that say they protect this well however, I have used several and this is the best case.
I have not and probably will never test the shock resistance or other abilities of the case however if you require such protection, I would not be surprised that the protection guarantee will be lower than what it is for waterproofing and withstanding a fall.