BirdaoGwra
i find the transition node easier to work with. it's also nice for blending when you want to say, move your legs while shooting, since you can filter the leg bones of the moving animation and blend that animation with your shooting. Basically I prefer messing with the states in logic but here's how I would do it.
Build a blend tree for your death states with each animation feeding into a transition with five states, including one for being not dead. Then you just code the death in your logic, with a variable that rolls a random number between 0 and 3, then you select that animation on death.