Thank you very much. And I'm glad you mention it.
This game relies entirely on SFML as it uses sf::RenderWindow to open the display, sf::Sprite for all graphics (except debug rendering of hit boxes) (and text but that uses sf::Text instead), all events and input go through sf:Event and sf::SoundBuffer handles the sound and many others like sf::Vector2f and sf::Clock are used all the time. So all in all this game is pure SFML. Maybe wrapped inside some helper classes but nevertheless.
I should really use this opportunity to thank the SFML developers and this community as without them this would not have been =) So thanks!