Hey Lythmass! Glad you enjoyed the game. Really sorry about the bugs. :(
There are 5 endings in the game right now if you manage to reach Earth. Each one takes a specific crew build and/or upgrade path to make it easier to get. Sorry about the confusion early on, we realize now that our game isn't very beginner friendly and we're working on a short tutorial sequence and a UI rework to help fix that.
Thanks for playing!