My score is for the game as it is. I don't believe that demo's must be subject to easier standards then full games. I am convinced that the final game has the potential to be better.
The good part that is done well is the graphics, particularly the undead dragon himself. That's the cutest undead dargon I have ever seen. The funny double jump animation is really well done.
Now the bad things that need to be fixed:
- It's imperative that either the game screen gets increased or the scale must be zoomed so that more can be visible. It's a bad idea to force players to do jumps where they cannot see where they have to land.
- Game sometimes freezes for half a second during jumps, It doesn't affect gameplay but should be fixed.
- In the last level where dragon must jump on head of a knight to bypass a pillar - this mechanic is nice, but is incompatible with knights not regenerating after player's respawn. There are two knights on that platfom and this jump effectively reduces the amount of attempts left to just two even if the dragon has hull lives before that. So either don't make such jumps or make knights always respawn after dragon's death. I suggest the latter.
- Make the key required to enter doors different from jump key, because as it is now the dragon cannot jump when standing near door. Since entering doors is rare it can be some obscure key far from usual finger placement, like Enter or anything else.
If all these things were fixed I would increase my score from 4 to 4.5
I would increase my score to 5 if you added 6 more levels making a total of 10 levels, but to make those additional levels not repetitive you would also have to add a few more different traps - like fireball shooting statues, crushers, falling stalactites/stones, moving platforms and/or similar. You would also have to introduce health boosters to make it not too difficult to make it trough a longer game. I suggest placing an additional heart at each level on a path away from the main one, that would be a secret or semi secret. If all this would be well done my score would be 5.5.
Add an intresting storyline screen/movie in beginning and you would get additional +0.5 from me.
Add a rewarding ending screen/movie in the end and you get another +0.5 from me.
Add a boss mentioned in storyline in the end and you get another +0.5 from me if it is easy or based on patterns and an additional +0.5 if it is hard and unpredictable.
That's 7.5 so far (if well executed) and I think it's all pretty much mandatory to add these things to call it a proper game.
To make a great game and get a higher score (from me, most other reviewers are way more generous - but you don't want flattery from mediocre minds do you?) you would have to add a new game mechanic - a new ability for the dragon, maybe projectile attack or something else. And you would have to add projectile enemies like archers or magicians and some environment element that requires that additional ability to be utilized. To get a score of 10 from me the game should have around 20 levels of increasing difficulty with all these additional enemies, traps, pickables and environment elements and a boss in the final level.
I hope this helps to see some perspective. Good luck in developing the game further.