The dungeon crawler sounds marketable. It's got your own twist on it but it's not weird or bizarre enough to throw KIckstarter backers off. Do you do your own art or do you have an artist? How about music? If you're going to have a successful Kickstarter campaign, I've observed this:
1. Dev blogs help
2. A nice list of previous games, even small indie ones on Newgrounds or somewhere else, can help (as long as the games don't suck!)
3. Having an awesome sense of art direction helps
4. Having awesome music samples helps
5. Having a well-edited video helps
And of course beyond that the rest is common sense. T-shirts, in-game exclusives for backers, and other incentives to back. It'd also help if you could get a decent amount of publicity on Steam Greenlight before you make your campaign. If you're going to do Kickstarter, you'd best have a very complete sense of your game design. For me, I have game design ADD. I cannot stay focused on one game. I rarely finish my games because I have another "great" idea, and then I follow that until I reach my second or third dead-end. I'm still a newbie though, but I have friends who ran successful Kickstarter campaigns, so I know what they tell me.
You might also reach out to the team responsible for Our Darker Purpose: as yet the only game made on C2 that has been Greenlit on Steam. They also had a successful Kickstarter, so my guess is you could learn a lot from them if they were willing to spill the beans.
Best of luck!