I am using a suitelet to generate a file and download it to the users computer. However if we need to generate and download multiple files how would that be done? Ex need a .csv and a .pdf file generated and downloaded at the same time. Currently using context.response.writeFile to download the file to the users computer.

Perhaps compressing the files into an archive before returning it to the user?

Put those file in the same folder and then download the folder…it should download as a zip file.

I would need them as separate files can't zip them up

It is not possible, and it is not related to NetSuite... It is HTTP protocol, request > response