Here is the full list of all 20 Mini Thief achievements.
Unlock every safe in Main Game
Laughter is his Madness!
Get busted 20 times
Escape whilst being chased
Now these are friggen schweet!
I don't know the guy?
Let's take a walk in the Abyss!
Is it true what they say? Did the cactus really pass gas?
47 Times and still no hit man!
Successfully bait a guard dog
The most stealthiest moving company ever!
If there's one animal you wouldn't want to meet in a dark alley it's a salt water croc!
There goes my BP!
Escape the house with the lights on
Get busted 10 times
Huh? What was that noise?
Scare the Wife
Complete your first house
Beat first level, first difficulty
Successfully rob any difficulty 3 house without alerting anyone