Fortress Siege Game 1: Heretic Astartes vs Aeldari

Mission: Maelstorm of War: Contact Lost, Eternal War: Frontline Warfare
Deployment Type: Spearhead Assault
Point Limit: 2000
Lists:

Chaos Space Marines:
Battalion Detachment: Legion: Black Legion

• HQ
• Abaddon the Despoiler
• Chaos Lord equipped with Chainsword, Power maul, The Eye of Night
• Troops
• 3 x 10-man Chaos Cultists

Vanguard Detachment: Legion: Black Legion

• HQ
• Warpsmith
• Elites
• 3 x Helbrute equipped with Missile launcher, Reaper autocannon

Spearhead Detachment: Legion: Black Legion

• HQ
•  Chaos Lord equipped with Chainsword, Power sword
• Heavy Support
• 2 x 9-man Havocs equipped with 4 x Lascannon
• 2 x 9-man Havocs equipped with 4 x Missile launcher
• 8-man Havocs equipped with 4 x Missile launcher

Aeldari:
Battalion Detachment: Drukhari: Kabal of the Black Heart, Cult of Strife

• HQ
• Archon equipped with Venom Blade and The Helm of Spite
• Lelith Hesperax equipped with 2 x Penetrating Blade 
• Troops
• 3 x 5-woman Wyches

Vanguard Detachment: Drukhari: Prophets of Flesh

• HQ
• Urien Rakarth
•  Elites
• 2 x 6-man Grotesques
• 7-man Grotesques

Spearhead Detachment: Asuryani: Ulthwe

• HQ
• Eldrad Ulthran
• Heavy Support
• 5 x Fire Prism

The Deployment:
I set all my Havocs into one building. Grotesques at the edge of the deployment zone.

Heretic Astartes Turn 1:
I shoot everything and only manage to kill 5 Grotesques.

Aeldari Turn 1:
Grotesques advance and the Prisms kill the blue squad of Havocs. I also lose some Cultists due to smites.

Heretic Astartes Turn 2:
I kills a squad of Witches and 2 more Grotesques.

Aeldari Turn 2:
Grotesques advance once again. I lose both squad of Cultists and the purple Havocs team.

Heretic Astartes Turn 3:
I kill a whole squad of Grotesques.

Aeldari Turn 3:
They kill a Helbrute and another squad of Havocs.

Heretic Astartes Turn 4:
I reposition the last squad of Cultists, they kill a Witch but fail the charge. On the other side of the battlefield I kill Eldrad and a Grotesque.

Aeldari Turn 4:
Another squad of Havocs goes down and a Helbrute is wounded. Witches assault and kill all the Cultists.

Heretic Astartes Turn 5:
I kill 3 Grotesques.

Aeldari Turn 5:
They kill the last squad of Havocs.

Heretic Astartes Turn 6:
Abaddon kills the warlord. Helbrutes and Warpsmith kill one Grotesque and wound another.

Aeldari Turn 6:
Prisms kill Abaddon. Grotesque and the last character kill the Warpsmith.

Heretic Astartes Turn 7:
One Chaos Lord denies an objective. The rest of my guys kill the last Grotesque.

Aeldari Turn 7:
The Chaos Lord dies along a Helbrute.

Game ends with a score of  Aeldari 20 - 0 Heretic Astartes.
I knew I cannot win this game because I was out ranged by the Fire Prisms, deployment type didn't help either. Still we laughed all game and we had a good time.