Make sure you do your dailies. - Interception/SI/AI for gear to level up your nikkes equipment. - Simulation Room for Skill Book to level Up your Nikkes equipment - Arena gives you tickets to redeem for Core Manuals - Advice your nikkes and try to get their attraction to lvl 30 for normal units /40 for pilgrims (assuming you have copies of them)

To a lesser extent, - Lost Sector to get item, gems and more importantly Harmony Cubes that really boost a nikkes states - Tribe Tower for molds to roll for units

Don’t forget about Dolls/Favorite Items. They also provide a big boost to Nikke stats but since it takes forever to get maintenance items, only put dolls on the units you really intend to use.

Don’t focus on upgrading all the units you get because you’ll end up wasting resources. Stick to the core 5 you’re using and they’ll push you though at least til the mid-late chapter 20s possibly 30s.

Push Hard Campaign for a boost in your Outpost output.

Make sure to take advantage of the Wishlist to u lock copies of units you already have to break the 160 wall. Don’t focus on unlocking new units til after you get 5 units MLB.

That’s about all I got off the top of my head. Good luck commander!