Here is the full list of all 21 Rescue HQ - there are The Tycoon achievements.
Successfully complete the Train Wreck emergency in the Berlin Scenario.
Successfully complete the Stronghold emergency in the SF scenario.
Own a level 3 crew of every specialization (fire, police, medic).
Have a room on every available tile in any scenario.
Start the game with a mod.
Reach 100 crew members.
Own all three helicopters in a single scenario.
Reach the highest reputation cap in a scenario.
Get your first grant.
Get your first suspect processed.
Successfully complete an emergency with less than 20% success chance.
Have 1.000.000 T during a single scenario.
Unlock every available item during a single scenario.
Have more than 150 crew members
Have more than 60 police crew
Lose due to bankruptcy
Lose due to not having any more crew left
First crew member quits
Finish San Francisco Hard with more than 1.000.000 T
Finish a scenario with 100% success rate
Successfully finish San Francisco Normal