Here is the full list of all 77 Revenge of the Titans achievements.
Hurrah! Christmas is finally over!
Defeated 4 Xmas Ultrayetis
Defeated 3 Xmas Ultrayetis
Defeated 2 Xmas Ultrayetis
Defeated 1 Xmas Ultrayeti
Researched everything
Vanquished 10,000 Titans
Nuked 250 Titans from orbit
Nuked 100 Titans from orbit
Blew up 500 Titans using explosives
Made $10,000 profit from one mission
Made $15,000 profit from one mission
Fried 500 Titans with the Capacitor
Got $50,000 in the bank
Fried 250 Titans with the Capacitor
Turned 100 3-D Titans into 2-D Titans
Giant Titan killed within a few metres of the base
Base held together with tape and string at end of mission
Lost 90% of your buildings to the enemy
Researched all science and technology
New rank: field marshal
Used the shield powerup 5 times
Fully upgraded a turret
Researched all defenses
Researched all turret upgrades
Researched the decoy tower
Completed the Titan missions
Completed all missions at maximum difficulty
New rank: general
Destroyed the Ultratitan!
Researched all explosive tech
Blew up 250 Titans using explosives
Used the freeze powerup 5 times
Researched the droid factory
Nuked the site from orbit 5 times
Squished 50 Titans under new buildings
New rank: lieutenant general
Repaired your buildings 5 times
Researched all weapons
Blew up 100 Titans using explosives
Used bezerk powerup 5 times
Got $25,000 in the bank
New rank: major general
Nuked 50 Titans from orbit
Completed the Saturn missions
Destroyed a Behemoth
Lost 100 buildings to the enemy
Made $5,000 profit from one mission
Fried 100 Titans with the Capacitor
Vanquished 5,000 Titans
Lost 50 buildings to the enemy
Completed the Mars missions
Destroyed a Gargantuan
Crushed 25 Titans under new buildings
Vanquished 2,500 Titans
Researched nuclear reactors
New rank: brigadier
Completed the Moon missions
Lost 25 buildings to the enemy
Destroyed a Leviathan
Got $10,000 in the bank
New rank: colonel
Lost 10 buildings to the enemy
Vanquished 1,000 Titans
New rank: lieutenant colonel
Completed whole world at maximum difficulty
New rank: major
Completed the Earth missions
New rank: captain
Defeated a Megatitan
Vanquished 500 Titans
Vanquished 250 Titans
New rank: lieutenant
Got $5,000 in the bank
Vanquished 100 Titans
New rank: second lieutenant
New rank: warrant Officer