Well, I mean... type /ah in the the chat box and buy yourself a win. Get as many reds or yellow inspirations as needed (or green, orange, or purples).
I've done the monster mash solo, without inspirations, no Incarnates, all the stuff and I'm of the opinion that Giant Monsters were designed during a time where IOs didn't exist and players needed to team up to overcome a challenge. Newer GMs (think Boomtown Council Warwalker) have new gameplay mechanics to spice it up a little, but it's still a bag of health.
It's still fun though! 😜