(Spoiler Alert) Was The Main Quest Playtested? Lander Issues
I'm beginning to be suspicious that the main quest did not go through testing. There are several sequences that need lander upgrades that you don't have access to:
1. Mercury and Io for radioactives. In the original game, both places were toxic, but it was possible to sneak your lander, get the stuff, and go.
2. Lacaille - NONE of the planets are landable with Degenerate Matter.
By the way, the first officer tells you that the planet is not lander friendly AFTER you lose your lander in a couple of instances. This should be prioritized for a fix.
I posted about the achievement issues in the support for low priority, but these should be high priority.