Trying out Vanilla Space Marines vs Nids before the new codex! (500 pts picture batrep)

I borrowed my pals Blood Angel models to 'proxy' Vanilla space marines against (some of) his new Tyranids.

I ran a 10 man tac. squad with plasma cannon and flamer, a Librarian

5 sniper scouts with a Heavy Bolter and 2 Predators with no upgrades.

He had two Hive guard with some sort of weapon that ignored Line of sight and had Ignore Cover. they were pretty brutal!

Then he had a bunch of hormo-and-termagaunts, Genestealers and the HQ unit that is basically a beefed up Warrior.

The assault marines in this picture are actually the sniper scouts. They got picked off by the Hive guard. The heavy bolter was first to go. but they did kill a genestealer before their demise.

both my two predators and the hive guard firing a total of 4 shots and hitting on 3+ never managed to get more than 2 hits per turn for the entire game (except for one turn when the HG actually managed to get 4)

As the Nids surged forward, my stalwart Marines gunned them down more and more.

They took out the scouts and blew off the gun on one of the Predator Tanks, which I then moved up to block movement for the Nids on my left flank. I only had the tactical marines, libby and one tank left by now.

But the hail of bolter fire, coupled with plasma and the fiery psychic powers of my Librarian whittled the oncoming horde down. The grand finale being my librarian making the Warrior HQ blow up.

There were one more turn after this consisting of my marines moving up and putting some gaunts to the torch with the flamer and then engaging the hive guard.

It was freaking scaring having a swarm of nids rushing up like that, especially since he got the warlord traits that lets his dudes roll an extra die for running, or something like that.
The librarian did some serious damage with his psychic powers, and the Nids got pretty bottlenecked between the ruins and the rocks (and tanks, hehe) turning it into a bit of a killzone.

FOR THE EMPEROR!