How does your submission match the theme?
Dual Purpose Design?

Shooting:
1 - Interact and kill enemies
2 - Missing / Interacting damage you but you can get your bullet back
3 - Shooting a flight bullet produce more ammo and protect you from the incoming bullet (deflect)
4 - HS do more damage

-Any bullet collision in flight will produce ammo.

Moving:
1 - Moving will stop you from dying (not moving for too long will hurt you)
2 - Moving arround enemies will heal your wounds over time. (Closer the better)

Enemies:
Shooters:
1 - Provide a good source of ammo and a low source of health
2 - Getting shot damage you but give you one more bullet
3 - They will try to take cover, leaving their head expose

Maniacs:
1 - Provide a good source of health but no ammo
2 - Getting hit from them will only damage you
3 - They try to chase you, attack you up close and annoyed you
4 - Can be use as meat shield against enemy bullets (friendly fire is disable)

Environment:
1 - Neons on wall indicate the next rooms enemies (fast flashing purple green lights indicate Maniacs, other indicate shooters)
2 - Other Neons (floor ceiling is for beauty purposes, I'm a prog not an artist)
3 - White Ceiling lights indicate a door
4 - Terminal open/close doors

Music:
1 - Music will reflect the situation, the more danger (less health, more enemies) the heavier the music
2 - Bring a nice ambiance

Third-party resources
Made with Unity, Gimp and Audacity

External sources:

Sounds:

212601__pgi__machine-gun-001-single-shot.ogg : https://freesound.org/people/pgi/sounds/212601/

138480__randomationpictures__bullet-blood-3.wav : https://freesound.org/people/RandomationPictures/sounds/138480/
81042__rock-savage__blood-hitting-window.wav : https://freesound.org/people/Rock%20Savage/sounds/81042/
32637__carrigsound__step-11.wav : https://freesound.org/people/carrigsound/sounds/32637/
38873__swuing__footstep-concrete.wav : https://freesound.org/people/swuing/sounds/38873/
38875__swuing__footstep-metall.wav : https://freesound.org/people/swuing/sounds/38875/
41474__rh2yfreesound__wyse50.aiff : https://freesound.org/people/rh2yfreesound/sounds/41474/
156507__primeval-polypod__door-open-close.wav : https://freesound.org/people/primeval_polypod/sounds/156507/
150222__killkhan__menu-select.mp3 : https://freesound.org/people/killkhan/sounds/150222/

Musics:

http://www.bensound.com/royalty-free-music/track/extreme-action

http://freemusicarchive.org/music/Langax/Under_The_Shadow/02Langax-Inflexion_974

http://freemusicarchive.org/music/Langax/Under_The_Shadow/05Langax-RHP4

Fonts:

http://www.1001freefonts.com/starlight.font

http://www.1001freefonts.com/djb_get_digital.font

Contributors
Frédéric "Dragon Eyes" Carrier - Everything, also voice (Profession programmer)
Alex "ReichSloth" Harvey - Tester
Nadia "Peanut" Arsenault - Tester