Turn 1Dark Angels:
Tactic #1 against Tyranid xenos beasts is to disrupt their psychical link to the swarm fleet. Therefore synaptical creatures are to be eliminated first. Tactic #2 is to eliminate their long range weaponry and by thus dividing them further without the ability to support their advance.
But these are but hollow doctrines when a 3 meter tall Lictor with giant mantislike claws is only inches from your position and you do not have even a single grenade to clear the crater in front of you.
The order from the Deathwing Sergeant was repeated in every vox-reciever of the small Marine host. The reaction was sparse as only 3 Terminators shifted their position, the brothers equipped with close combat weapons screening their brethren, who were to decimate the swarming xenos with bolt and shell, from any danger within the crater.
The Ravenwing Landspeeder accelerated leaving a small cloud of dust behind.
++Target lock acquired, ready to enga... Incoming fire!++
A hail of living ammunition flew over and below the Dark Angel vehicle, then the characteristic crack of a Venom Cannon to the right could be heard over the battlefield. The Landspeeder was shaken in an explosion of small acidic splinters and the gunner fell upon his controls instantly dead. It was the xenos who had taken first blood.
As a response the Master of the Ravenwing steered his Landspeeder even farther right behind the big rock formation to gain more cover while bringing the Tyranid Warriors and the Zoanthrope into his field of fire.
++Open fire! Target long range support.++
3 Assault Cannons on different positions on the battlefield began to rotate and spit hot lead into Tyranid creatures. The Ravenwing Landspeeder slew the Biovore with its first burst. Then the Deathwing Sergeant opened upon the Tyranid Warriors across the bridge and the fence. The bulky creatures were shelled and shrieked, but a sudden crackle of electricity around them prevented every single fired shell to strike home.
Then the Master of Ravenwing aimed at the trio of xenos monsters. After another electrical storm had passed over them, 2 of them lay dead on the ground, the 3rd swinging its Venom Cannon around. The Gunner next to the Master of Ravenwing pulled the trigger of his Heavy Bolter and ripped through the Hormagaunt swarm killing 5 of the smaller creatures.
The remaining brothers of the Deathwing fired their Stormbolters at the Termagaunts, the only eligible target in range, and brought low 2 of them.
After dust and debris from the Space Marines barrage had set, the Chief Librarian probed the winds of the immaterium, which seemed weak this day (3d6 only confered to 4 cards). The Chief Librarian knowing the imminent danger of the Lictor prepared himself for the inevitable clash in melee that would soon follow and cast Qickening on himself.
On the other side of the battlefield the Zoanthrope focussed the warp energies to a blast on the Master of Ravenwing. But the Master of Ravenwing knew his craft and due to his maneuvers, the deadly energies passed harmless by.
The Tyranids had paid dearly for the killing of the Ravenwing Landspeeder Gunner. However neither their long range weaponry nor the synaptic creatures on their left flank were entirely wiped out and still posed a serious threat.
The Deathwing moves into firing positions, while the Lightning clawed Terminators shield their comrades. The Assault Cannon inflicts several hits on the Tyranid Warriors, but not a single shell penetrates their Voltage Fields.
The overwatch fire from the Tyranid Warriors kills the Ravenwing Landspeeder's Gunner, but fails to hit the vehicle itself.
After the second Assault Cannon barrage only the Tyranid with the Venom Cannon remains next to the Zoanthrope, while the swarm of Hormagaunts is reduced to under half their number.
The last to fall to the Dark Angels fire are the unfortunate 2 Termagaunts, which happen to stand as a meat-shield in the first row.