Here's my feedback:
- I like the revolver thingy at the top.
- I like the idea Special die skills are very satisfying to use and are animated quite well. It would have been probably cooler if they were actually the primary weapon, for example: 1 > lightning, 2 > fireball, etc. Then you throw the dice and see what you get.
- Sometimes (eg. when you move backwards) it's not clear who killed you, maybe don't allow enemies that you can't see to kill you.
- FOV should be larger.
- Rules should probably be somehow shown inside the game. They are a bit too hard to remember for a quick web game.