Shit-Stealing Gnomes

Become one of the followers of Gnomic Resistance and pave the way to overthrow human domination!
Steal filthy (or shiny) human things to replenish the Resistance treasury.
Mission
You will have a To-Steal list, so keep to it to avoid punishment.  Mission - first, Mission must be done.
Have finished To-Steal list and have more time? Loot for yourself, it's your future wealth!
At first you will be given simple mission in nearly abandoned houses without any security, but later, as you become Pillar of Resistance, you will be given difficult and significant tasks, that only your team can fulfill
Upgrades
By doing missions you will rise in rank and Resistance will give you access to new equipment that will be useful on more difficult mission. Assault ladders, drones, night vision, item detectors - everything will be yours, just do your job properly.
Keychains
Find keychains in missions, sell them or use for your team to get some useful perks.
Car
Your car is your teammate - without it you will be unable to do your job properly, so keep it in tact, upgrade to fulfill your team's needs. On the mission it's your safehouse and hub with various tools.

Danger
Humans are intelligent, sometimes, so they will react and find a new ways to counter you.
Their houses vary not just by size but also by diffuculty. The richier the house - the stricter it's security systems. You will face fully closed "bunkers" with cameras and detectors and, maybe, even something worse than this...