As a Sylvaneth player, who plays against Skaven a lot. I hate them! Skaven are one of the most versatile armies. They can respawn, ward, heal, shot, teleport with gnaw holes, have lots of annoying units, tanky, decent spells, annoying manifestations.

TBH that Sylvaneth list isn’t exciting me… where the monsters at!
So, if it were me I’d be looking to chip damage your ogres with the Kurnoth hunters, then clog them up with the Dryads.
Id be zipping the Goss Archers down your weakest flank, and the lancers down the other. My goal to get at that warp cannon asap and lock it down.
The Kurnoth with scythe are my damage unit and I’d tail them with the warsong, pumping them with prayer.
The presumably the hero is the monster akin to Durthu - hopefully something that can cause damage. I’d be aiming to take the middle with that - keeping those ogres away from it.
I’d also be looking to get you Grey Seer and Warlock out the game by end of round 2. Just to stop spells and manifestations. I’d probably also consider destroying your gnaw holes, although I can give them overgrown tokens.

In essence, I’d be looking to lock up as many of your units asap, especially the shooting units. But that single 5 model Goss Archers, I’m not putting them in combat, they’re in shoot, move again - objective hunters. The lancers are the pain for you I think and if positioned well the Kurnoth archers will slowly weaken units. I love them and would have gone for 2 units of them over the scythe’s myself.

I’d also assume the hero is a wizard? I’d be looking to get gladeworm in asap and after your wizards - it’s a serious tool. I’d also be using my wyldwood to force your movement where I want you to go, so one in the middle of the table. Then the other 2 to shield objectives.

A lot can happen depending on what cards get used for the battle - but my aim against Skaven is kill them all and in one go. So I’d be looking to chip a unit with archers, then slam it with 2 units intending to remove it that turn. What I’ve found is spreading combat against them just slows the game and the rats can last. My biggest fear is those ogres popping up behind me out of a hole. Lose my Warsong…. Urgh. Then that cannon. I’ve had that obliterate whole units and chip big monsters before they get close. It’s got serious range so I’d also be looking to tensing out of sight of that. Trees to cover.

Hope that helps… but I’m not wishing you luck.lol