I see... XD
Hmm... I think the first Kirby game I played was Kirby Air Ride for the GameCube. Before then, I only knew Kirby from SSBM. (I was really young when I played it, so...) Later on, I got Kirby Squeak Squad for the DS. Then I got Kirby Super Star Ultra for the DS, then Kirby's Return to Dream Land for the Wii... And then I actually went and got an older game, Kirby and the Amazing Mirror for the GBA. And finally, I got Kirby Triple Deluxe for the 3DS.
I don't know where Kirby: Tilt N' Tumble comes in. It probably used to be my brother's or something.
As for 100% beating Kirby games, Kirby Squeak Squad was the first one I beat 100%. More recently, though, I beat Kirby Air Ride 100%. In fact, I did it near the end of Summer Vacation.