New to Warhammer trying to build a strong tyranid list, could anyone give me some feedback?

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Tyranids

Strike Force (2000 points)

Assimilation Swarm and Talons of the Norn Queen (3 Detachment Points)

Force Dispositions: Priority Assets, Take and Hold

CHARACTERS

Broodlord (100 points)

• 1x Broodlord claws and talons

• Enhancement: Regenerating Monstrosity

Neurotyrant (125 points)

• 1x Neurotyrant claws and lashes

1x Psychic scream

• Enhancement: Biophagic Flow (Aura)

The Swarmlord (210 points)

• Warlord

• 1x Bone sabres

1x Synaptic pulse

BATTLELINE

Gargoyles (80 points)

• 10x Gargoyle

• 10x Blinding venom

10x Fleshborer

Termagants (110 points)

• 20x Termagant

• 20x Chitinous claws and teeth

18x Fleshborer

1x Shardlauncher

1x Strangleweb

OTHER DATASHEETS

Barbgaunts (55 points)

• 5x Barbgaunt

• 5x Barblauncher

5x Chitinous claws and teeth

Biovores (60 points)

• 1x Chitin-barbed limbs

1x Spore Mine launcher

Carnifexes (90 points)

• 1x Carnifex crushing claws

1x Carnifex extra scything talons

1x Chitinous claws and teeth

Exocrine (140 points)

• 1x Bio-plasmic cannon

1x Powerful limbs

Genestealers (140 points)

• 10x Genestealer

• 10x Genestealers claws and talons

Haruspex (125 points)

• 1x Grasping tongue

1x Ravenous maw

1x Shovelling claws

Neurolictor (80 points)

• 1x Piercing claws and talons

Norn Assimilator (250 points)

• 1x Monstrous scything talons

1x Toxinjector Harpoon

Psychophage (110 points)

• 1x Psychoclastic torrent

1x Talons and betentacled maw

Pyrovores (95 points)

• 3x Pyrovore

• 3x Chitin-barbed limbs

3x Flamespurt

Ripper Swarms (30 points)

• 1x Chitinous claws and teeth

Screamer-Killer (125 points)

• 1x Bio-plasmic scream

1x Screamer-Killer talons

Tyranid Warriors with Melee Bio-weapons (75 points)

• 1x Tyranid Prime

• 1x Tyranid Warrior claws and talons

• 2x Tyranid Warrior

• 2x Tyranid Warrior claws and talons

Many thanks.