Your tyrant is for close combat? Then he'd be better with wings.
Sadly true, I tried a walking melee Tyrant, but when the enemy doesn't want it in combat, he can too easily chose to do so.
You'd be better dropping your lictor.
He'll jump out and if he's lucky kill a couple of guys and tie a unit up for a turn but they die too easy to just about anything.
One Lictor isn't that bad,
imo, try it out i say! especially with your dropping spore mines the reserve re-roll can do good. Sure, If I were playing torunament-hard-balling here, I would say no-go.
You have nothing shooty in your army.
Exalt! Same route as I. That's the spirit of the Tyranids!
Your zoe's should have warp blast/ scream. It'll give them something to do other than keep up synapse.
Add another one and gve them all Warp Blast. It's pretty unrealiable to down Armor (because your opponent will know this is your only shooting way to do so and will react accordingly) but with three of them they will give your opponent some trouble (don't forget to keep them in synapse, though!)
I'd drop the warriors as I think you'll be lucky to get them into cc.
Give them leaping and they are not bad, especially with so many Gaunts around, you need some faster Synapse. Maybe get some more of them. Heavy Bolter and Equivalents eat them for lunch. I run them with leaping,
rc and
st and enhanced Initiative to kill faster than the enemy. Very useful.
And now to some other points:
Sadly, the melee carnifex is as doomed as his intelligent brother. He won't see combat that often. Never so to speak. So drop it and get some more Warriors and/or the third Zoey for the points.
The Gaunts shouldn't be buffed at all. I like my Hormagaunts with enhanced
Ini but that's about it. They are 10+ points a piece and that is very expensive already!
Rippers are also a tad bit too slow. Sad for the models, I know, but that's
40k for you.
So my advice: Downgrade the Gaunts. Pimp the Tyrant.Take the Bio-Acid Mines for Anti Tank. For a mere 36 points you get another Swarm of them, so if you have fast attack slots to spare, get some of them. Buff up your 4+ Armor Bugs. Get some Genestealer for good measure, they are nasty and fast (4+ Armor upgrade is gold). And the games could get funny. Good luck and tell us how you did!
Greets
Schepp himself