Yeah, believe the bad reviews.

It wasn't all bad. It was fun for a bit, then got very repetitive and annoyingly self satisfied. It could have been a 90 or 100 minute movie. The secret/twist is actually kind of an interesting one - even if it's not super original. But they just tried too hard to be too cute with this movie.

Looks like they were trying to tie this in with the Kingsmen movies and fishing for a sequel or prequel, from the post-credits scene.