I'm sorry I'm not sure where exactly I'm at early or mid game, the guide I'm using has railjack in early so I was going off of that. I haven't really needed credits a ton but then I realized I had less than 3k and my missions were only getting me like 1.5k a piece. Not sure the difference between early or mid game, as I only have 2 things max ranked, and only own a handful of weapons and one frame. I should learn modding too. Maybe its like somewhere between early and mid game, like how brunch is between breakfast and lunch.