Some good things to know

Did you know blood comes in three colors?

Bright red is oxygen rich blood, fresh from the lungs, pushed onward with the heart. It surges and spurts if you hit the artery straight on, or just leaks fast, like a hole in a jug. A nick to the brachial or femoral artery will kill some in two minutes. They collapse in one minute, heart pumping hard, purging them of life. Then they just die. 

You ever feel someone's heart stop? 

It lumbers and shudders in slowly diminishing gait, then a few sad little last constrictions, like a loser sputtering poorly formed last words in an argument.

I don't like the carotid, you might as well cut a hose under pressure. The blood gets everywhere.

The radial is hard to hit, the bones protect it pretty well. You have to cut hard, but because the artery is smaller it takes too long for them to bleed out.

Now, blood from the veins tends to be purplish, freed of oxygen. The wounds tend to ooze. Slow and steady, hitting one is still good, but they take just a bit longer to die.

Hit both vein and artery, which a good draw cut across brachial can do, pathways of life pulled taunt over bone, blade slicing deep, and you got a dead man leaking a odd mix of purplish bright red. 

For this a knife is best, they are silent and hard to trace. Blood gets everywhere, but I just burn my clothes.

Goodwill is a good place to pick cheap replacements. 

Granted, I could just slam a knife into their heart, lungs, or even their eye, but bones are tough. They are there for a reason, a rib or eye socket can deflect the blade, turn a killing blow into flesh wound. And stabbing them in the stomach just takes too long to end them. Unless you hit the liver, the liver is a good target. Kidneys too. But you need a long knife to get them right. Also wiggling the blade helps. 

I know a solid upward stab from the gut has a chance of striking the heart, but the angle can be hard to get correct, especially if they are fighting you.

I mean at that point you might as well as shoot them or run over them with a car.

Where is the fun in that?

I cut deep and true. They die seeing my face. 

And you pay me on time, you will never see mine.