Here is the full list of all 14 The Dealer achievements.
Buy any item in Lenny's Store
Sell any item
Complete Tutorial
Complete Mike Lamangra's quest
Earn 1000$
Earn 2000$
Complete Mr. Powder's quest
Get 10 good karma points
Get 10 bad karma points
Finish Day 1 in Story Mode
Finish 4 days of Story Mode
Finish Day 1 in Survival Mode
Complete 4 days of Story Mode without bad karma points
Complete 4 days of Story Mode without good karma points