Quite an enjoyable experience, and certainly a unique take on the theme! Taking a 'or lack thereof' approach to permanence is definitely something I can get on board with. Gave me a lot of nostalgia for ShellShocked, and the enemies all firing at once when you keep them in your radius is almost scary in a good way. All-in-all a very fun little game and an interesting direction to take the theme.
My only complaint is that it's a bit hard to know when it's your turn. Something as simple as a little brightness pulse to show it would go a LONG way in my opinion.