Really, really love the main characters. The models and animations all look fantastic. The closeup window is sexy and looks incredibly cool. The UI in general is sleek, unique and functional. The underwater environment, enemies and effects look great!
Sound design is good and varied. Since you're usually hitting enemies from far away, the sound effects from any that get close are very loud, so some sort of limiter may be needed. A cool underwater soundtrack would be amazing.
The game controls very well, this is probably among the best controlling 3D underwater games I've played, but it does feel awkward at first due to how fast everything happens. The gameplay is currently completely combat oriented and is combo focused, either you juggle enemies with no chance to fight back or they juggle you. An action exploration game with these characters and controls may work better than an arena and would also give players more of a chance to appreciate them.
This is a game that can really go places and already feels very fancy. Very nicely done, even with the character models ready in advance, this is an awful lot to get done in two weeks and you should definitely feel proud!