The main characters usually use the threat or appearance of violence rather than actual violence. For example, they will shoot at people but intentionally miss or they'll blow things up, but make sure that nobody gets hurt by the explosion.
Blood is shown in every episode.
Despite having constant action, there are not many onscreen deaths. However, characters sometimes get bloody injuries.
The majority of the violence involves fairly brutal beatings and hand to hand fighting, this often results in serious bruises and some blood.
Occasionally, people are tortured with beatings and electricity.
Things are blown up frequently, but usually nobody alive gets caught. Cars are also frequently wreaked, however passengers usually only end up with minor injuries. People are often shot at, but they don't usually get hit, and if they do, it's often not a fatal injury, though it can be bloody. Stabbings occur, however they are also usually not fatal.