How did you implement the Theme?
To us, one weapon generated more than a few ideas. At first we considered a gun with a single bullet you had to retrieve, but ultimately we landed on this. A kind of side scroller 2d shooter with only a single weapon. In addition we took the one hit quite literally and used it to develop our gameplay to be more puzzle focused.

How did you implement the Modifiers? (if you did)
We implemented the one hit modifier by making the enemies and player both die in one hit.