@Andre1209
The problem is stating that it wants you to use the Trace(); function to send the value of totalBill to the output window. To use Trace(); you want to say: trace(varName); In this case we want to send the value of totalBill to the output window, so we would say trace(totalBill);
If you would want to use ASDW movement i would assume you would change the code in your ship.as file's if statement, when its stating which key is being pushed. Maybe Try if(Key.IsDown(Key.W)etc...)
Nice modeling, textures. Expecially for 4 hours. Nice gameplay mechanics so far, maybe take the weapon sway off just a tad, feels like it lags behind a little. Other than that its amazing, good job 5/5