While not without flaws and some bugs this game is quite good.

Overstayed its mission design.

Don't get me wrong the game can be fun but after about 6 planets I'm done with their mission design.
Everything repeats; and with your deck and upgrades almost complete it just became too repetitive.

I think the game can be more fun if they just let us explore the whole planet without returning for energy refill and by having healing stations at the planet instead of heading back to your homebase. It just adds unnecessary backtracking.

The progress is too slow because of the unnecessary backtracking. The backtracking design is very mobile game oriented. Maybe on the sequel they can implement a better design, if ever they get one.

Definitely not a bad game. Compared to others at least it isn't hellbent on making you want to tear your own hair off and punch a hole through the wall. But the game design isn't very appealing and neither is the gameplay.
It is not a bad way to kill time, but there are other, better options out there.