If you never seen his videos you should, Yri for a few years now has been producing some of the most entertaining Terraria challenge videos from killing the Dungeon Guardian(a one hit creature that spawns if you try to explore the dungeon without killing Skeletron) with only a shotgun, killing the wall of flesh on night 2 of the game, battling all the console hadmode bosses(Twins, Destroyer, Ocram, and Prime) at once as well as challenge playthroughs such as his yet unfinished Summoner playthrough(where he goes through the game using only summoned minions to deal damage)

His youtube channel is here:
https://www.youtube.com/channel/UCkqBGpsiOkZMdwpvWmWRw8g

Also here are a few vids:
One caster(spells and magic based attacks only) against 8 Duke Fishrons
http://www.youtube.com/watch?v=PxD_2b71hYM

A battle with Ocram, Prime, Twins and Destroyer at the same time
http://www.youtube.com/watch?v=H_XfCPBGKyY

Dungeon Guardian kill:
http://www.youtube.com/watch?v=0I6J977n_2

Dungeon Guardian kill done in 2 seconds:
http://www.youtube.com/watch?v=LpS10cO-2Aw

And here is him trolling the game's creator Redigit and the rest of the Relogic team
http://www.youtube.com/watch?v=Jc4ZL6SXL28

Before anyone gets too excited about this one, it was fixed. The guardian only deals 1000 damage now, so you need to dodge 10 times in a row to kill him with this method (or get some friends to sacrifice themselves).