Professional scripting, amatuer scenarios.
It goes without saying that the game's scripting is far above what I would expect on Newgrounds (no offense to others). However, the combat system alone isn't worth having to listen to the dialogue. It's not that the voice actors are bad... it's that the lines they speak are as appealing as a bad fan-fic.
Aside from the lack of artistic inspiration, the sounds are appropriate, the graphics, though they seem a bit disjointed (Main character face vs. 1st Summon face), are certainly acceptable, and the combat, as a whole, is impressive.
Some improvements are needed, but with your technical skill, I doubt the lack of them will drag your projects down too much.