Wow. Multiplayer! That was an ambitious goal that you pulled off amazingly well, even in WebGL. You've really raised the dungeon crawler bar there. The graphics had some scaling problems so we couldn't quite work out where we were in relation to enemies or the environment. The camera angle wasn't the classic dungeon crawler so you might get some comments about that (we did last year!). The real downside was how brutally difficult it was. We joined as a team and only managed to kill one enemy between us and had no health at the end of it.
Now, those keyboard bindings... WASD to move, QE to rotate, are the standard and everyone's muscle memory is built around that. Is this a French keyboard thing? We may have been able to get further into the game had these been what we were expecting them to be.
As for the theme, maybe the duality should just have been that it was two player?
Amazing effort on this, you should be really proud of what you've accomplished, especially in a week. Keep going on your game development journey, we look forward to playing your future games.