Its a good story which you get involved very quick even if its start very slow. It's my first Valkyria game so I can't compare to the others.
The Battlesystem is ok but after a while it gets boring because there are rare development..
The cutscenes are sometimes way to long (about 15min to 30). If you follow straight the story, you will be very underleveld by the end. For level grinding you can do Free missions which are repetitive during the whole game (only difference is the level of the bad guys). It gets really boring really fast.
The controls are ok but the camera don't move automatically if you turn around, so you always have to adjust it yourself. Other than that it was a very comfortable experience.
I won against the valkyria in the free mission with level 48 and in the end with 56 (while she was 70). The game is super easy and hard entcounters are very rare. (I played on normal difficulty (there is normal or easy))
The Trophies are very easy and not missable. The reason I don't give 10 points is because of the trophy where you have to spend 300 000 in a shop on the promenade, while you need 250 000 for fully upgrade your secondary weapons but it doesn't count towards the trophy. If you don't save your money, spent it on a shop, reload, upgrade your weapons, you need to do a lot of farming with the repetitive levels (story missions or free)
Still I enjoyed the game and the story but it's sure no masterpiece.