I'd get rendering done first, at least at a basic level. In my personal experience visual feedback helps most in the dev process because when there is something to see on screen you notice directly if movement (cam, player, unit, etc.) respond correctly to user input, if stuff is colliding as it should and so on.
From that point on I think it depends a bit on what kind of game you are making
Clear. In that case I would define a set of features for your (current) game and slice them into feasible blocks. That way you can implement block by block, both having the pleasure of visible progress and working towards an end goal; your finished game with features xyz etc.
Sub and walk through this Java Game Dev tutorial: https://www.youtube.com/devfactor
Post questions in comments when you get stuck :)
Sub and walk through this Java Game Dev tutorial: https://www.youtube.com/devfactor
Post questions in comments when you get stuck
I do believe that I said I was using Monogame, which is only for C# to the best of my knowledge.
Trying to advertise yourself isn't something you should do on the forums.
Your response is irrelevant.
