Checkpoints without enemies not respawning

[Sauron The King]

Hello,

I'm making a custom story. There is a part in which an enemy is chasing you and will brake doors in its way. But if you die, the enemy won't spawn again and some doors are destroyed.
How can I make you respawn, without monsters not respawning and doors still destroyed?

It should be like you saved at a certain point and continue playing from that certain point, while all the events which happened after that point, will happen again.

Grtz,
Brian