Hey, I've added a new version of the game. 

Multiple bugfixes

Multiple changes to UI:

• 3 difficulty levels
• better colors and fonts
• sounds
• every time you change map there is a black screen with map name

Multiple changes to statistics:

• minimal difficulty level used during run
• kill count
• individuals kills (killing same guy after restart will not count to this one)
• death count
• shots count

In the next update there should be a new map that I'm already working on!