Movie is fairly old (I saw it in 2006, may already have been out for a while before that). Best way I can describe it is if a group of college film students made a superhero movie with no budget. The movie was set on a college campus, everything was pretty ridiculous and the movie was mostly about weird superhero/supervillain type characters randomly fighting each other. Think a cross between avenger and fight club if the entire budget for the movie was $12.
I vaguely remember the “final fight” of the movie involved defending a sapling tree that had just bee planted, but that’s about it.