As a fellow indie developer, the main resource hog for a character action game is enemy design, variety, and especially animations.
There's a reason the LSA trailer showcased either animationless enemies or enemies using the PC's animations - Shit is expensive to do well. Especially for things like bosses, which are a must in character action.
You could get away with the environment, probably. With some effort, the PC animations.
But even for a full set of that, you're going to need mocap, which is a major cost barrier.
I really don't see this getting finished without 20-30 people involved.