Here is the full list of all 51 Final Assault trophies - there are 35 bronze, 14 silver, 1 gold and 1 platinum.
Win a Skirmish on Chateau Tod
Collect all Final Assault Trophies
Destroy 1000 German Motorcycles
Destroy 1000 US Jeeps.
Win 50 Multi-player matches
Win 50 Skirmishes
Play 7 Days in a Row
Play 30 Days in a Row
Win 100 Multi-player matches
Win 100 Skirmishes
Destroy 1000 German Planes
Destroy 100 German Planes
Play 3 Days in a Row
Spawn 500 Planes
Use Troop Trucks to spawn 1000 German Troops
Spawn one of every type of US Unit
Fire 100 Artillery Barrages in PVP
Spawn one of every type of German Unit
Fire 100 V2 Rockets in PVP
Use Troop Trucks to spawn 1000 US Troops
Destroy 100 US Planes
Destroy 100 German Motorcycles
Destroy 100 US Jeeps
Destroy 100 US Tanks
Destroy 100 German Tanks
Win a Multi-player match on Breckon Harbor
Win 5 Multi-player matches
Win a Multi-player match on Hill-512
Win a Multi-player match on Wallenberg
Win a Skirmish on Corvid Pass
Destroy 50 German Tanks
Destroy 50 German Planes
Win a Skirmish on Kleinstadt
Destroy 50 US Planes
Win a Multi-player match on Corvid Pass
Destroy 50 German Motorcycles
Destroy 50 US Jeeps
Spawn one of every type of Unit
Complete Campaign Mode with all 3 US Commanders
Complete Campaign Mode with all 3 German Commanders
Complete Campaign Mode with Beaumont
Win 25 Multi-player matches
Complete Campaign Mode with Galland
Complete Campaign Mode with Simmons
Destroy 1000 German Tanks
Destroy 1000 US Planes
Destroy 1000 US Tanks
Win 25 Skirmishes
Complete Campaign Mode with Nichols
Complete Campaign Mode with Wulf
Complete Campaign Mode with Von Ritter