Here is the full list of all 31 Battle Arena: Euro Wars achievements.
BATTLE ACHIEVEMENT:FB
BATTLE ACHIEVEMENT:LMS
BATTLE ACHIEVEMENT:MK
BATTLE ACHIEVEMENT:SM
BATTLE ACHIEVEMENT:TS
COMMUNE ACHIEVEMENT:CLI
COMMUNE ACHIEVEMENT:CS
COMMUNE ACHIEVEMENT:MS
COMMUNE ACHIEVEMENT:PN
COMMUNE ACHIEVEMENT:POL
FLAG ACHIEVEMENT:FDG
FLAG ACHIEVEMENT:FFG
FLAG ACHIEVEMENT:FL
FLAG ACHIEVEMENT:FRG
FLAG ACHIEVEMENT:RRT
PERSONAL ACHIEVEMENT:AA
PERSONAL ACHIEVEMENT:FM
PERSONAL ACHIEVEMENT:IWYL
PERSONAL ACHIEVEMENT:JSR
PERSONAL ACHIEVEMENT:NP
PERSONAL ACHIEVEMENT:TBL
PERSONAL ACHIEVEMENT:WSD
POINT ACHIEVEMENT:PC
POINT ACHIEVEMENT:PL
POINT ACHIEVEMENT:PM
POINT ACHIEVEMENT:PR
UNITY ACHIEVEMENT:GCDC
UNITY ACHIEVEMENT:LAO
UNITY ACHIEVEMENT:LS
UNITY ACHIEVEMENT:OMS
UNITY ACHIEVEMENT:RWDS