The theme of "the less you shoot the more it matters" is a really interesting take on the theme. It also it different from other top-down shooters where you're encouraged to be firing away most of the time (meaning this acts more of a stealth game).
Also I really like the "back dash" because it encourages the player to "walk backwards" so they can run away, but the downside is not being able to see what's ahead (as your light is in the opposite direction of your movement) :)
I think it's meant to be an arcade-type of game of "see how long you can survive for" but it would be nice to see maybe an end-goal/objective.