Collect all of the Valhalla Orders. A specific solider in each stage from about Episode 13 and later has a Valhalla Order. You cannot return to get any that were missed.
In mission 19, have Edward fire on Max, the lead Panzer Demon. He will then run away. Then in mission 21 , kill everyone except for Max. After the last enemy dies you will have an over-powered Panzer Demon on your side. This character is the only one that can use the anti-tank rifle without a weight penalty.
Complete the following achievements to unlock Xbox Live Gamerscore points.
How to unlock
Africa Star ( 45 points )
Find the Muramasa Blade, Dragon Slayer and Excaliber weapons.
Distinguished Service Cross ( 80 points )
Complete all 15 Armored Recon ( AR points) missions.
Medal of Honor ( 95 points )
Complete Stage 27 ( final stage points) with all AR and all EX missions also clear.
Military Cross ( 90 points )
Complete all 20 Extra ( EX points) missions.
Purple Heart ( 35 points )
Complete the first mission in less than 14 minutes.
Silver Star ( 70 points )
Complete missions 1 to 27.
Solider's Medal ( 65 points )
Collect Valhalla Orders 1 to 12.
Victoria Cross ( 100 points )
Finish Missions 1 to 27 within 35 hours.
War Medal ( 20 points )
Play on Xbox LIVE.
Thompson SMG: Mission 1 found on Lieutenant's body
Shotgun: Lewis has one, a dead american in the NE corner of the map on Mission 23 has one, and on mission 7 a Waffen SS Schutze is carrying one.
Custom Rifle: Mission 16, 5th wave of enemies. It's carried by a sniper.
PPSh1941SMG: Carried by a vampire on Mission 10
Muramasa Blade: Mission 11, carried by a Magier in the Northern Cluster of enemies
Dragonslayer: Mission 20, located on a Javier sent as reinforcements. Another can be found on Mission 22 located on a Magier
Excalibur: Mission ??? Second Wave of Reinforcements, located on a Vampire.
Mission 20 and 22
Mission 7 and 22
The following weapons can be looted from the corresponding person.
Valhalla Report 1: Mission 13, on W Heer Schutze.
Valhalla Report 2: Mission 14, on W Heer Schutze.
Valhalla Report 3: Mission 15, on a Waffen-SS Magier.
Valhalla Report 4: Mission 16, on a Waffen-SS Schutze.
Valhalla Report 5: Mission 17, on a Waffen-SS Schutze.
Valhalla Report 6: Mission 18, on a W-SS Panzer Demon.
Valhalla Report 7: Mission 19, on a Waffen-SS Vampire.
Valhalla Report 8: Mission 20, on a Waffen-SS Schutze.
Valhalla Report 9: Mission 21, on a Waffen-SS Vampire.
Valhalla Report 10: Mission 22, on a a Waffen-SS Schutze.
Valhalla Report 11: Mission 23, on a Waffen-SS Magier.
Valhalla Report 12: Mission 24, on a Waffen-SS Magier.
Complete each achievement for a total of 1000 Gamerscore points. All medal achievements are unknown. SPOILERS may ensue only for the medal achievements.
Completed a mission after obtaining the Muramasa Blade, Dragon Slayer, and Excalibur
Armed Recon 01-03
Completed Armed Recon Missions 01-03
Armed Recon 04-06
Completed Armed Recon Missions 04-06
Armed Recon 07-09
Completed Armed Recon Missions 07-09
Armed Recon 10-12
Completed Armed Recon Missions 10-12
Armed Recon 13-15
Completed Armed Recon Missions 13-15
Completed Campaign Mission 01
Completed Campaign Missions 02-04
Completed Campaign Missions 05-07
Completed Campaign Missions 08-10
Completed Campaign Missions 11-13
Completed Campaign Missions 14-16
Completed Campaign Missions 17-19
Completed Campaign Missions 20-22
Completed Campaign Missions 23-25
Completed Campaign Missions 26-27
Distinguished Service Cross
Completed all 15 Recon Missions
Eagle's Nest 01-05
Completed Eagle's Nest Missions 01-05
Eagle's Nest 06-10
Completed Eagle's Nest Missions 06-10
Eagle's Nest 11-15
Completed Eagle's Nest Missions 11-15
Eagle's Nest 16-20
Completed Eagle's Nest Missions 16-20
Medal of Honor
Completed Campaign Mission 27 after completing all of the Armed Recon and Eagle's Nest Missions