A W E S O M E
And you say it's a concept demo for simple indie makers : i don't have seen lot of such great concept games , even with 3DGS
you have some as cool things as God Of War on PS2 game , don't forget God Of War is 60-100 person , lot of 3D artists, 2-3 years to finish working full time.
But by putting your own originality you can demark fomr the PS2 game like a mini driving horse ride level or other original gameplay.
Anyway , great demo for a first shot ! Lot of potential and great commercial
game if you improve graphics, combos/powers in combat mode !!
-the lightening and texture look very flat, old style : try to bake 3D details
or use normal mapping shader , or baked stone specular lightening on walls ?
-same thing , the snakes don't seem to have great detailled textures, but perhaps your style game is between realistic/cartoon ?
another remark to improve your game :
-on the platforms put a detailled texture 'or it's cartoon style ??) ?
-Well diversified combat gameplay/strategie with ennemies would be better ,
like ennemies that could block hits some times,
also some combos and powers for ennemies and your heroe would be
necessary to avoid borring combat, not enought dynamic entairtaining ?
-More Dynamic/Strategic combat like Prince of persia or Zelda Zelda
were some attacks are better/necessary on some ennemies, jump attacks ,
attack avoid , throw can be added !!
Keep it up !