Bonus missions:
To unlock a mission’s bonus mission, collect all three hidden alien artifacts in that mission.
Missing LOLA-RR10 hint:
In the first LOLA mission, after escaping from Product Storage Sector I, do not park in the lift near the elevator to Product Storage Sector II. If you do, when you return to the LOLA later, you will enter the next cinematic immediately upon pushing the Enter action and will end up on the next LOLA mission on foot. If this happens, you will need to start the game over since the next LOLA mission requires the LOLA to complete.