I was hoping for more FPS style takes on the theme, so cool that you did! I really like the presentation; sadly, I think the gameplay needs a bit of work. Mainly, there's a lot of downtime waiting for the dice to be retrieve-able; maybe add a secondary button to pull it back? It could even have a longer or shorter cooldown depending on the roll, things like that.
All in all, cool concept and idea, just needs a bit more of polish and I bet it'd be a really fun fast paced game!