Hi DEV,
I had a 10 minute play and I can tell you've put a lot of hardwork into this so well done. I certainly couldn't do it, mainly becuase I enjoy playing games rather than creating games.
I don't know if you're planning on moving forward with this but If I can give you a couple of pointers.
1. Jumping needs improving. Give it a bit more height.
2. Fighting - I wasn't sure how I beat the zombies. I just pressed random buttons and suddenly I'd killed all the zombies and got an acheivement so maybe work on the animations.
3. Meeting the Sphinx - the sphinx asked a weird question about a girl killing her sister which I kinda found to be a little weird.
I liked the graphics style, It reminded me of another big name game but overall, you did really well. Try to be consistant with the graphics though :)
I suppose the hardest thing is that during the developemeint of a game is that you are constantly testing so try to defocus yourself between development and testing. When testing, try to step back and do the testing as if you have had no involvment with the life cycle of developement and also ask "the community" to test the game for you. Remember Feedback is important and this will benefit you greatly
oh and make sure that all your material is copyright free and covered by the public GNU License :)
Good Luckwobblyfootgamer