The following game assets are under CC-BY-SA 3.0 Unported ( http://creativecommons.org/licenses/by-sa/3.0/ ) :

Data/Animations/Wolfstop
Data/Animations/Wolfslap
Data/Animations/Wolfrunning
Data/Animations/Wolfrun
Data/Animations/Wolflanding
Data/Animations/Wolflandhard
Data/Animations/Wolfidle
Data/Animations/Wolfcrouch
Data/Animations/Winduppunchblocked
Data/Animations/Winduppunch
Data/Animations/Walljumprightkick
Data/Animations/Walljumpright
Data/Animations/Walljumpleftkick
Data/Animations/Walljumpleft
Data/Animations/Walljumpfront
Data/Animations/Walljumpback
Data/Animations/Walk
Data/Animations/upunchcaught
Data/Animations/upunchcatch
Data/Animations/upunch
Data/Animations/Tempanim
Data/Animations/TalkIdle
Data/Animations/Sworduprightparry
Data/Animations/Swordsneakattacked
Data/Animations/Swordsneakattack
Data/Animations/Swordslashparried
Data/Animations/Swordslashcaught
Data/Animations/Swordslashcatch
Data/Animations/Swordslash
Data/Animations/Swordgroundstab
Data/Animations/Swordfightidleboth
Data/Animations/Swordfightidle
Data/Animations/Sweepcaught
Data/Animations/Sweepcatch
Data/Animations/Sweep
Data/Animations/Stop
Data/Animations/Staggerbackhigh
Data/Animations/Staggerbackhard
Data/Animations/Staffhitcaught
Data/Animations/Staffhitcatch
Data/Animations/StaffHit
Data/Animations/StaffGroundSmash
Data/Animations/Spinwhackcaught
Data/Animations/Spinwhackcatch
Data/Animations/Spinwhack
Data/Animations/Spinkickcaught
Data/Animations/Spinkickcatch
Data/Animations/Spinkick
Data/Animations/Sneakattacked
Data/Animations/Sneakattack
Data/Animations/Sneak
Data/Animations/Sleep
Data/Animations/Slashstart
Data/Animations/Slashfollowed
Data/Animations/Slashfollow
Data/Animations/Sit
Data/Animations/Run
Data/Animations/Roll
Data/Animations/Rightflip
Data/Animations/Removeknife
Data/Animations/Rabbittackling
Data/Animations/Rabbittackledfront
Data/Animations/Rabbittackledback
Data/Animations/Rabbittackle
Data/Animations/Rabbitrunning
Data/Animations/Rabbitkickcaught
Data/Animations/Rabbitkickcatch
Data/Animations/Rabbitkick
Data/Animations/Lowkick
Data/Animations/Leftflip
Data/Animations/Landing
Data/Animations/Landhard
Data/Animations/Knifethrow
Data/Animations/Knifesneakattacked
Data/Animations/Knifesneakattack
Data/Animations/Knifeslashcaught
Data/Animations/Knifeslashcatch
Data/Animations/Knifefightidle
Data/Animations/Kill
Data/Animations/JumpUp
Data/Animations/JumpDown
Data/Animations/Jumpcaught
Data/Animations/Jumpcatch
Data/Animations/Idle
Data/Animations/Hurtidle
Data/Animations/Hangon
Data/Animations/Getupfromfront
Data/Animations/Getupfromback
Data/Animations/Flip
Data/Animations/Fightsidestep
Data/Animations/Fightidle
Data/Animations/Dying
Data/Animations/Dropkickold
Data/Animations/Dropkick
Data/Animations/Drawright
Data/Animations/Drawleft
Data/Animations/Dodgeback
Data/Animations/Dead4
Data/Animations/Dead3
Data/Animations/Dead2
Data/Animations/Dead1
Data/Animations/Crouchstab
Data/Animations/Crouchremoveknife
Data/Animations/Crouchdrawright
Data/Animations/Crouch
Data/Animations/Climb
Data/Animations/Blockhighleftstrike
Data/Animations/Blockhighleft
Data/Animations/Backhandspring
Data/Animations/Backflip

Data/Skeleton/Rabbitbelt
Data/Skeleton/Basic Figurelow
Data/Skeleton/Basic Figure wolf low
Data/Skeleton/Basic Figure wolf
Data/Skeleton/Basic Figure

Data/Maps/tutorial
Data/Maps/start8
Data/Maps/start7
Data/Maps/start6
Data/Maps/start5
Data/Maps/start4
Data/Maps/start3
Data/Maps/start2
Data/Maps/start1
Data/Maps/raidercamp
Data/Maps/map3
Data/Maps/map2
Data/Maps/map1

Attribution to Wolfire : http://www.wolfire.com

All other game assets and demo data (should all be in "Data" folder 
in the root of the source tree) are not under the same license.
Wolfire has allowed the other data to be freely redistributed
for non commercial purposes, but it is forbidden to use in any revenue
generating works.