Here is the full list of all 53 First Strike: Final Hour achievements.
Beat Hardcore Mode with Australia
Beat Hardcore Mode with every Superpower!
Beat Hardcore Mode with North Korea
Beat Hardcore Mode with China
Beat Hardcore Mode with Kazakhstan
Won with every Nation!
Beat Hardcore Mode with India
Beat Hardcore Mode with Russia
Beat Hardcore Mode with Iran
Beat Hardcore Mode with Israel
Beat Hardcore Mode with South Africa
Beat Hardcore Mode with Europe
Played more than 50 games!
Won against 8 opponents!
Beat Hardcore Mode with Brazil
Won against 9 opponents!
Won against 10 opponents!
Deciphered end message!
Beat Hardcore Mode with USA
Played as Australia
Won with Australia
Played as Israel
Won with Israel
Won twice playing as North Korea!
Unlocked all Superweapons!
Won with North Korea
Occupied all of Oceania!
Played as China
Won with China
Played as Iran
Won as Iran
Won twice as India & Pakistan!
Played as India & Pakistan
Won with India & Pakistan
Played more than 20 games!
Played as South Africa
Won with South Africa
Won twice playing as Europe!
Played as Europe
Won with Europe
Occupied all of Africa!
Played as Brazil
Won with Brazil
Won twice as Russia!
Played more than 10 games!
Achieved World Peace!
Played as North Korea
Play as Russia
Won with Russia
Won twice playing as the USA!
Played as the USA
Won with the USA
Occupied all of South America!