Dodge the Taxes

In the far future, taxes have shot up by a factor of thousands due to (insert complex financial reasoning here). As millions of people become unable to pay their taxes, the IRS begins to dispatch Collectabots - and they come equipped with an overdriven cattle prod. Defend your shanty from the endless waves of Collectabots by shooting them with your pistol, collecting powerups, and blocking the windows and doors. How long can you survive? How long can you Dodge the Taxes? Originally made in 3 day...