Just a heads up, while playing my first game (solo, with 3 investigators), I was using Wendy. Make sure you read the FAQ on her ability, because unlike in most situations, when Wendy chooses to ignore a Non-Deal condition, she can still choose to NOT take one as the cost for an effect.
This means that she is fantastic against Hastur. Pick her as lead investigator every time you think there might be a reckoning as often as you can (just don't forget her ability only works once per turn).
BUT her best kept secret is one I stumbled across by accident... she is a MONSTER of a spell caster if the Ritual Candles ever hits the reserve. For those who don't have that expansion (Under the Pyramids I believe) or know what it does, it is a one-time use discard asset that gives you +5 to a single spellcheck (like a magical version of kerosene). But here's the kicker, once it is used, Wendy can use her action to reacquire it from the discard pile.
"Say what?" you might say. But it is true. She is one of the most potent and durable spellcasters in the game. She will most likely never be cursed, and only have to take direct damage from failed castings that otherwise give you conditions. In my game, she just happened to get Greater Banishment, and a secret stock of Ritual Candles. 3 lore (her base) + 5 lore (the candles) +2 (from the spell bonus) = 10 dice to banish anything on a gate close to her. Not half bad!
The new expansion also includes a number of assets that have the "roll one additional die when blah blah blah" mechanic. These are not bonuses and can actually stack on top of your bonus.
Just some Wendy tips from my first game! Hope many of you are not having problems finding a complete set of the expansion. It is terrific so far. Hastur was supremely fun to fight, and I've only seen 2 of his 7-ish mysteries.
Happy gaming!
Devious.