Avoiding combat

And don't forget Nu-Tremere Royalty with Mirror Walks AND Obediences.

Make it so that it Runs:

Villeins
Golgondas
Mirror Walks
Obediences
Second Traditions and Eyes of Argus
Some other stealth (veil the legions)
Govern the unaligned
Conditionings
Crypt accelerators like Information Highway and Zillah's valley.

Nothing fancy, but feasible.

You can add enough 2nd Traditions to play Obedience (for example when empty vampire hunts - it will hunt next turn also).

Stealth bleed with 2-3 secure havens & 5-6 secret passages wasn't mentioned.

But also there are anti-combat strategies which is playable with any deck:
1. Cross-table ally for rescue from torpor.
2. Influensing no minions (or just don't acting if the are high possibility of block)
3. Dealing

Also goot way is to put some combat in your deck and join the fun!

Like Peter says above, Trap+Undead Persistence on weenie fortitude is pretty much a trump to most combat out there. If you aren't seeing end combat at all it can be downright scary. I've run a version with ani/for weenies, the ani was just to get Drawing Out the Beast, which would even prevent your opponent from pressing to end combat.

Shamblers are awesome against combat heavy decks, rush or block rushes, hit hard and opponent cant tast. Combo with FBI and ppl will think twice before rushing you. If there are alot of blockers seduction and call the hungry dead can be used both for shamblers and powerbleed...

undead persistence weenies is annoyingly strong. just last night, my predator was playing one and i was running my Ignazio deck. i had to rip the arms off of 4 minions (undead persistence triggers off of sending them to torpor, then taking their arm sends them directly there, or if they play it to avoid the disarm's trip, they are at -2 strength with big potence) and i also graverobbed 2 minions. and my deck is very strong combat. if you're looking to superbly cheese-off combat players, thats a deck that does it very well. fortitude version of penitent resilience and flash grenade is possible. i like having combat in my decks, just because its good to be able to fight back against combat, and also to possibly bully non-combat decks. it always depends on what kind of combat you are having issues with, and what decks you're running.

Direct Intervention is the cure for what ails you.