Pretty nice game I must say.
Graphics look verry nice. I like how the game uses Parallax scrolling to add depth perception.
Music is simple but fitting to the game theme. I also like how it changes based on game state (different music when you are fightin enemies).
Controlls are quite good even thou at first the default key alocations seem a bit unusual but you quickly get acustomed to them.
I also like how all ingame cinematics are done with the game itself (scripted scenes).
I like that the game also comes with a built in editor. But I couldn't managed to figure out on how to use it correctly.

Only drawback I found with this game is that becouse it is made by German developers not all campaign texts are translated. So you end up with "kein text" all over the place.
Now I don't speak German but several members of PGD do so maybe it might not be a bad idea to ask them for help with game translations.

In short I think this is a game with huge potential. So I definitly recomend you to give it a try.