So... is Kämpfer finished or not?
NO, it is not finished.
Why?
The anime finished before the manga:
Anime finished: March 06, 2011
Manga finished: June 27, 2013
MangaUpdates contains information about the anime adaptation and indicates that it is incomplete.
Watching Order (by release date)
Here you have all the anime relations we detected ordered by release date, so you can see the reason for this status in context and also use it as watching order.
The mangas and the non-core contents are excluded by default, but you can enable them by clicking the buttons below:
Kämpfer
けんぷファー
Anime - Base
Release date: October 02, 2009
Kämpfer für die Liebe
けんぷファー für die Liebe
Anime - Sequel
Release date: March 06, 2011
Synopsis
Natsuru wakes up one day to find himself transformed into a girl and designated as a Kämpfer, a mystical warrior forced to fight other Kämpfers.
This transformation throws his life into chaos as he grapples with his new female form and the dangers of Kämpfer battles.
Complicating matters, his best friend develops a crush on his female form, and the need to navigate both the boys' and girls' schools leads to hilarious and confusing situations.
He must learn to master his Kämpfer abilities and figure out who his friends and foes are amongst the other Kämpfers, all while trying to maintain some semblance of a normal life.