Katniss hears the Trumpet followed by another announcement from Claudius Templesmith. He explains that at this point in the Games, every tribute is in desperate need of something. He or she will find that very thing in a backpack at the Cornucopia the next day at dawn. Peeta tells Katniss he won't let her go, won't let her risk her life for his.
Haymitch told Katniss not to go to the Cornucopia at the beginning of the Games.
Water
The female tribute was killed in the "bloodbath" at the Cornucopia at the beginning while the male tribute was killed by being stabbed in the stomach with a spear by Cato after Katniss returned to the Cornucopia to get supplies but ended up blowing them up. Both of the District 3 tributes are unnamed
While running away from the "blood bath" in the cornucopia another tribute throws it at Katniss and Katniss catches it with the pack on her back.
Katniss sees Foxface stealing supplies from the Careers.
I believe Clove. The female tribute from District 2.
omfg someone awesome this dam questions
Peeta stops her
A bow and a quiver full of arrows.
She doesn't like it but she goes to save Peeta's life
Katniss shoots the boy who killed Rue in the throat. She also shoots Cato when he is dying in the Cornucopia.
So many tributes die in the Cornucopia because they are fighting over supplies and weapons. Anyone else, like Katniss, may be able to get away with a few things, like a sleeping bag, and then survive off the land. It was just a bloodbath. Katniss was told by Haymitch to stay away from there, it would give her the chance to get away from everyone else, and to not be killed.