Just a simple, subjective, tip.

When you reach the level that lets you spread to more planets... be careful. Spreading too much will slow down your farming speed.
At the begining you will not notice, but soon helpers will travel to connected but desert planets. And the only way to 'bring them back' is to wait till they die and respawn them at any desirable-not deserted planet.

Almost all achs just need playing and clicking, but one at this moment-version is left "unachievable" (in my opinion a very bad practice). Any kind of solution should have been taken in consideration to leave the game completable. I hope the new version is released soon and this issue is solved.

The lack of background farming is not a big problem if you like the game, but be aware if you want to complete it. If you liked Plantera, The Space Garden will like you too even without background farming.

HF!