In Alien: Isolation, can save-reload help with achievements?

After completing the game I can confirm that the following works for all of the above except Mercy or Prudence?

• If you're quick you can hit pause and reload before you die. You'll see a tape icon in the top right if you're too late.

• Certain late game enemies (from the reactor maintenance on) will not let you pause once the death animation starts, so be very careful around them.

• If you're not quick enough then the current save is compromised, however the following works:

• Load the current save

• Then pause and select the previous save

Note that if you get killed before you save again you'll have to go back to the mission save.

For Mercy or Prudence? it appears that you have to load the mission save at least, but I can't confirm that as I didn't kill anyone.