560 DOOM (2016)
13. bloodrush: "dark horse" challenge doesn't work.
14. player visibility in ffa modes is insufficient. even bright armors often turn pitch black.
Is this BFG edition or the original Doom 3?
It should just need you credentials then for Windows 7, may be a one time thing for a new exe. Win7 is known to have an overly protective UAC (User Access Control) set up on it that may require you verify who you are when running it. You can adjust this by using the properties in Windows for either all of your systems security or just that program, also you may need to set the exe to "Run with Admin Privileges" all the time. Look up stuff online about annoying Win7 UAC stuff for games, you'll come across plenty.
If its the original Doom 3 and not the BFG edition you may need to set the exe's compatibility mode to WinXP to get it work and you may need to set the exe to "Run with Admin Privileges" all the time. Since the program is old Windows overly zealous UAC will try to protect you from something it doesn't know the signature of. Alternatively you can get an open source variant of the engine online and run Doom 3 on that since those projects generally have better compatibility with modern OSs and they are directly based off the original code for the engine so there shouldn't be any compatibility issues with the original game assets.
Hope this helps some and good luck!