There have been multiple instances where I'll go somewhere for the upgrade things, only to be stuck because I can't go back the way I came from, or there's no way forward without an additional upgrade. In addition, respawn safety checkpoints won't activate and I'll be stuck in the same place, requiring me to return to orbit. There was one spot where my respawn was on a rock face and it slid me off to my death, with no reachable ledge in sight. Put me in a respawn loop with no way out.