Play the campaign level Payroll Bandit, and combine the following in order:
fight + tough guys
Dominic + tough guys
gun + running Louie
Dominic + explore
bar + Dominic
golden watch + seller Pete
bar + explore
bank clerk + RPG
Boom! Cheev unlocked.
Advice from Spilner:
"If someone already completed the episode, suggestion is to back out to the episode list, press
and then highlight the one you need to redo and press
to restart."