I love those tasks, where is need to destroy something. In this case, I cannot make a mistake. As a tool for achieving of the goal you can use anything - own weapons, parked cars or calmly free-available tank.
The game has about 30 levels, the beautifull magazine of weapons, achievements and other cool stuff.

Instructions

Mouse - Aim
Arrow Keys/WSAD - Move
Space/J - Jump
LMB/Z - Fire
RMB/X -Throw grenade
LShift/C - Activate hammer time
MWheel/Q/E - Cycle weapons
E/Enter - Enter vehicle
Esc/P - Pause game
M - Mute audio
V - Change view