Get Diamond, coal, iron, gold, make a torch, make a bucket, tame a wolf, survive a creeper explosion, Kill a skeleton with a sword, kill a creeperwith a sword, kill a spider with your fist, get obsidian, travel to the nether, make tnt, kill a zombie pigman, kill a ghast, hook a ghast with your fishing pole, get glowstone, make glass, make a ladder, make a fence, blow up over 1000 blocks, make a cookie, grill a porkchop, use a texture pack, make armor, survive a straight 100 block fall, stand on a block with nothing under it or connected to it, make a redstone circuit, use a note block, use a record, get a full set of 64 diamonds, drown, get killed by a skeleton, get killed by a zombie, get killed by a spider, get killed by a creeper, kill yourself with TnT, kill yourself with arrows, get killed by wolves, fall to your death, burn alive, get struck by lightning, hmm.... oh, and create a snow block. Just to mention a few off the top of my head.