Here is the full list of all 21 Basement achievements.
Captured all local neutral buildings
It's day 5 and you still don't know how to produce stuff
Kenny figured out how to sell stuff
Healed using green
Paid Tupo to the last
Earned $7000 to start development of your game
Paid old bills
Earned $42000
Released a good prisoner
Released a bad prisoner
Robbed homies
Managed to move all stuff from police station
Got rid of lots of stuff
Didn't share with Sid
Distracted Big L too much
Taught producers
420 packs of green
Upgraded to superjunkies
Found Seed on a first try
Now you know what is Tripak Atshkur
Removed a bunch of Investor's servers