Here is the full list of all 26 Toy Soldiers: HD achievements.
Complete Level 1
Defeat the Tsar Tank
Defeat the Zeppelin
Defeat the Uber Tank
Defeat the Rail Gun
Earn General Rank on any level
Win a Multiplayer Match on every level
Complete any level in Elite mode
Survive until Round 5
Guide a shell to its destination
Earn an Overall Rank of General on all Campaign levels
Complete All German Levels and Ration Tickets
Find all of the Golden Cubes
Defeat the K-Wagen
Get a 40x blast combo
Shoot down 40 UFOs with your P-51 Mustang
Defeat RoboBob
Find all of the Golden Rockets
Get the Standard Bearer to the Flag Base
Finish The Long Push
Finish Netopyr
Survive until Round 8 on Knights of the Air
Survive until Round 8 on Creative Defense
Survive until Round 9 on Siege of Maubeuge
Survive until Round 9 on Invasion!
Find all of the Platinum Cubes