During Panic Room mission sometimes when i enter the second room i get mission failure status straight away.  And other time I don't until I get to the VIP.

So my suggestion is at the start of the mission when Metrodora Thelema states that you have a few Terran minutes until door beach. Is it possible to have a "Hit point bar" for the door in the Mission UI.  Something similar to the "Silence the Guns" demolition UI.