Public domain drawings of cockroaches from "Histoire physique, naturelle, et politique de Madagascar" via Wikimedia Commons.

https://www.archive.org/stream/histoirephysiquept23pt1gran#page/n277/mode/2up
https://fr.wikipedia.org/wiki/Projet:Biologie/Illustrations/Insectes/Histoire_physique,_naturelle,_et_politique_de_Madagascar

The placeholder tile images floor.png and cwall.png are from the public domain
roguelike tileset "RLTiles". You can find the original tileset at:
http://rltiles.sf.net

Wall and floor tiles:
https://commons.wikimedia.org/wiki/File:Concrete_aggregate_grinding.JPG
https://commons.wikimedia.org/wiki/File:Concrete_Casting_Defect_Blowhole.jpg

Font used in graphics is "Epilog" by Divide By Zero:
http://fonts.tom7.com/

Gun:
https://commons.wikimedia.org/wiki/File:Indumil-Cordova.jpg

Crowbar:
https://commons.wikimedia.org/wiki/File:Standard_Crowbar_Black.jpg

fire_spit.wav
Created from ./Berklee44v10/pencil_scrape_1.wav from the One Laptop per Child project.
URL: http://www.archive.org/download/Berklee44v10/Berklee44v10.zip
Source: http://www.archive.org/details/Berklee44v10
License: http://creativecommons.org/licenses/by/3.0/
Credit: Sound samples from Berklee recorded for Richard Boulanger for use in the One Laptop per Child music library. See http://wiki.laptop.org/go/Sound_samples for details.
Transformed by Neil Muller, using:
head -c 6000 pencil_scrape_1.wav > test.wav
Transformation licensed: http://creativecommons.org/licenses/by/3.0/

gun_fire.wav
Created from ./Berklee44Barkovich/gunshot1.wav from the One Laptop per Child project.
URL: http://www.archive.org/download/Berklee44Barkovich/Berklee44Barkovich.zip
Sources: http://www.archive.org/details/Berklee44Barkovich
License: http://creativecommons.org/licenses/by/3.0/
Credit: Sound samples from Berklee recorded for Richard Boulanger for use in the One Laptop per Child music library. See http://wiki.laptop.org/go/Sound_samples for details.
Transformed by Neil Muller, using:
sox gunshot1.wav test.wav vol 0.25 fade 0 0.9 0.15
Transformation licensed: http://creativecommons.org/licenses/by/3.0/

screech.wav
Created from ./BoulangerTamTamReplacements44/birdscreech1.wav
URL: http://www.archive.org/download/BoulangerTamTamReplacements/BoulangerTamTamReplacements44.zip
Source: http://www.archive.org/details/BoulangerTamTamReplacements
License: http://creativecommons.org/licenses/by/3.0/
Credit: Sound samples by Boulanger TamTam Replacements recorded for Richard Boulanger for use in the One Laptop per Child music library. See http://wiki.laptop.org/go/Sound_samples for details.
Transformed by Neil Muller, using:
sox birdscreech1.wav screech.wav vol 0.5 fade 0 0.4 0.15

cut.wav
Created from ./Berklee44v8/cut_cardboard_2.wav
URL: http://www.archive.org/download/Berklee44v8/Berklee44v8.zip
Source: http://www.archive.org/details/Berklee44v8
License: http://creativecommons.org/licenses/by/3.0/
Credit: Sound samples from Berklee recorded for Richard Boulanger for use in the One Laptop per Child music library. See http://wiki.laptop.org/go/Sound_samples for details.
Transformed by Neil Muller, using:
sox cut_cardboard_2.wav cut.wav fade 0 0.4 0.05

enemy_hit.wav
Created from ./Berklee44v13/dripamin_2.wav
URL: http://www.archive.org/download/Berklee44v13/Berklee44v13.zip
Source: http://www.archive.org/details/Berklee44v13
License: http://creativecommons.org/licenses/by/3.0/
Credit: Sound samples from Berklee recorded for Richard Boulanger for use in the One Laptop per Child music library. See http://wiki.laptop.org/go/Sound_samples for details.
Transformed by Neil Muller, using:
sox dripamin_2.wav enemy_hit.wav fade 0 0.75 0.05