Dies to Removal

I made a Br aggressive deck for my friend who's just getting into Magic. He literally played for three hours then took the deck to these results: FNM 3-2, TNM 3-0-2 into top eight, and FNM 2-0 drop. The deck has a ridiculously high win-rate for being noob-piloted. Has anyone had success with this kinda' build?

[deck]Creatures
4 Gravecrawler
4 Diregraf Ghoul
4 Rakdos Cackler
4 Spike Jester
4 Rados Shredfreak
2 Lifebane Zombie

Spells
4 Bump in the Night
4 Skullcrack
4 Searing Spear
2 Flames of the Firebrand

Enchantments
3 Burning Earth

Land
4 Blood Crypt
4 Dragonskull Summit
4 Mountain
9 Swamp

Sideboard
2 Duress
2 Appetite for Brains
1 Mutavault
1 Burning Earth
4 Crippling Blight
2 Flames of the Firebrand
3 Pillar of Flame[/deck]

The goal is to apply an unfair amount of pressure turns 1 and 2, and then burn them out.