There are 8 accolades and 1 title associated with Temporal Ambassador.

Alternate Allies - Talk to All NPCs prior to the riot.

In the Tunnels:

Dead Jim - Find Corpse
Wisest Tribble - Talk to the Tribble
Temporal Treasure Hunting - Find the Box and reap the rewards.
Everyone Remember Where We Parked - Complete the Map

After the Tunnels:

Don't Quit your Day Job - Assigning the worst positions for the jobs (Tasha-Power, Castillo-Tractor Beams, T'Nae-clamps).

Now you C Me - Pan around and look at the Enterprise-C on the Boarding Ramp. (Ususally do this before this before the first Force Field).

Third Anniversary - Completing Temporal Ambassador