I know that premade assets are allowed but am questioning the scope of that, for example if I have some code laying around that would work for setting some ground work is that usable or does my code have to start entirely from scratch? I also asked in the discord but realized this is probably the better place to ask questions

You can build upon the work you have done in the past or that you have in your arsenal! If you want to be super transparent about that, you can write about it in the description. If you want to see how well you understand the code and how fast you can make it from scratch - just make it your challenge this week :)