Playing my first-ever game (against Tyranids) - any tips?

Playing my first ever game on Sunday! My buddy plays Tyranids (likely fairly swarmy), so am curious about my list and how it’ll fair. Thanks for the tips in advance!

Here’s what I’m working with. Plan is to run my warrior up the mid with overlord attached, screen with scarabs, and bring Nightbringer up to contest mid as well. LHD stays back for home objective, while Ophydians tunnel to take out his home objective holders (either barbgaunts or gargoyles).

++ Army Roster (Xenos - Necrons) [750pts] ++

  • Configuration +

Battle Size: 1. Incursion (1000 Point limit)

Detachment Choice: Awakened Dynasty

Show/Hide Options: Legends are visible, Unaligned Forces are visible, Unaligned Fortifications are visible

  • Epic Hero +

C'tan Shard of the Nightbringer [255pts]

  • Character +

Overlord [105pts]: Veil of Darkness, Warlord . Overlord's blade and tachyon arrow

  • Battleline +

Necron Warriors [200pts] . 20x Warrior w/ gauss flayer: 20x Close combat weapon, 20x Gauss flayer

  • Infantry +

Ophydian Destroyers [100pts] . 3x Ophydian Destroyer: 3x Ophydian hyperphase weapons

  • Swarm +

Canoptek Scarab Swarms [40pts] . 3x Canoptek Scarab Swarm: 3x Feeder mandibles

  • Mounted +

Lokhust Heavy Destroyers [50pts] . Destroyer w/ gauss destructor

++ Total: [750pts] ++

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