How would I make this loop stop when a value changes?

I am making a Boss that will randomly choose an attack, basically, I want this loop to detect when the Alive value is no longer true and start the death function. However, with this script, when it has 0 health it waits until it finishes an attack before doing the death function which isn't how it is supposed to work. Basically, the instant the Alive Value is false, I want it to stop what it is doing and play its death animation, and I have no idea how to.

This is the main part of the script, the attacks are usually 5 to 10 seconds so its really awkward when the Boss is at 0 health and he hasn't died until after he finishes attacking.

while Alive.Value==true do
    wait(2.5)
        FireSequence()--A missile firing sequence that takes a couple seconds
        wait(2.5)
    RanChoice=math.random(1,5)
    if RanChoice==1 then
        print"FLAMETHROWER"
        Flame()--A flame throwing sequence that takes a couple seconds
    elseif RanChoice==2 then
        laser()--A laser shooting  sequence that takes a couple seconds
        wait(1)
        Move()--Moves the boss
    else
        Move()
    end
end
print"DEAD" 
Death()--This is supposed to activate when Alive.Value==false