Not confident I understand timing rules, so feel free to disagree and correct me.

----- Moderator comment: Rejected: Un-neutralized qualifying threats remain (insects that were spawned from opened sarcofagi). Rejection decision reverted after reviewing footage and finding the insects were benign despite proximity to conscious humanlike pawns. Note: Time ends when all sarcofagi are open & no qualifying threats remain. Tip: Only need to open one. The rest open automatically. Tip: Don't worry about timing accuracy. I always verify timings, and it's actually easier for me if you start timer too early :-)