I'm not sure, but it might work to put the respawn on a reach marker. I can't remember if spawning on a reach marker triggers it.
However even if it does, there's two major problems with doing this:
1) You can't guarantee the player will die. Even if you drop 20 ships on him, he might hit Evasive Maneuvers and manage to get out of range before they kill him. If you do something less extreme then survival becomes more likely.
2) You can't guarantee he won't die before he's supposed to. And unless something's changed since I last checked, respawn points have a huge trigger radius and there's no way to prevent one from activating until a component or objective is complete. Even if you set the visibility to not show before some trigger, that doesn't do anything (I guess the non-visible respawn point is set to invisible, but it still works just fine). They'll always activate no matter what, and their huge radius means they trigger almost at the very start of your mission.