um, why are all the shipsand stuff so dang expensive?A golden sense of accomplishment, of course! That said, while I appreciate games that place achievement far on the horizon, I also would not mind if the cost of upgrades were re-tiered/rebalanced slightly to allow for more...logarithmic goal progression.
um, why are all the shipsand stuff so dang expensive?So, you have to play longer, duh. In life things aren't just handed to you!
Is there any particular reason the missions don`t give me credits? (on the lite game)The need-to-know is that you are not alone, and no one can complete missions at this point in time. Explanations may vary. The game designer is aware of glitches in general and has confirmed that the overhaul is in progress.
what does the middle screen mean?You're referring to the centre panel on the upper screen? The dot shows your position within the current sector. This will be more apparent in crowded sectors like Mu Mu.
Is there any particular reason the missions don`t give me credits? (on the lite game)See the reply by @Limxzero