Wow, this is the most feedback I have ever gotten. I'll try and fit everything Into a message here.
The music was made quickly from @Jengobapp as It was a Game Jam so we couldn't use too much time on creating that. I noticed It was also a little bit too quiet as well however by the time I noticed we had to submit it.
The ghosts Is a work In progress as this was a little rushed on the 3rd day to ensure we had everything there for the Ghosts Theme and the game Itself Is really hard to get past any wave because the ghosts are unbalanced and move way too fast. We do plan to update them and make them have a flashing effect and a sound effect. It wasn't Intended for our game to be as dark as It was when In the engine the game looked fine and wasn't dark at all. While we were going to add lights with the ghosts we didn't have enough time to Implement It and nor did It work how we Intended It to when we tried.
Shooting Is a really difficult one to fix as well, there are a lot of issues with it which we will fix however the way It was scripted only allowed players to move forward to shoot in that direction but that was all we could do during this time.
The Environment and the barriers around the map were there to make It look like a never-ending city, by adding a wall of buildings would have made the map look pretty bad In our opinion. We also only have these barriers as temporary as we are hoping to expand the map further and further outwards for more exploration In the future and some more Buildings to add Inside the Interior too.
The User Interface Is something that might not be possible to fix, due to the way construct 3 works the 3D Objects are always on the layer above the 2D Assets which Is annoying. The only way we can fix this would be to remove the taller buildings and make the HUD a higher elevation than the buildings which Is what we will do In the full release more than likely.
I believe I know the Issue for the 2D Character and shouldn't be hard.
Anyway, thanks for your feedback. Ill talk to my team about this and get to work on It very soon!