Become Lunar Industries Employee - Reach level 5 and pay 500g. Your level is raised by 1 & you receive the Lunar Grunt Title Card.
Lunar Set Rebate - Reach level 10 and collect 5 pieces of clothing from your faction (beret, scarf, shirt, shoes, stockings) to trade in. You will gain 1 level.
Entering the Lunar Boardroom - Reach level 15, pay 1000g and gain 1 level. You now have access to the faction's forum, Lunar Corporate Office.
Buying Company Stock - Pay (your faction level) x 200g, raise your level by 1. (Can be saved for later/done at any level)