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