Somewhat... disappointed.
I was reading through the description before I played. "Defeat the zombies" was easy enough to understand - I'll be piling up bodies like no tomorrow.
When you said "managing multiple resources", I pictured having to micro-manage at least a dozen different resources - food, water, health packs, ammunition, guns, people, wood, metal, plastic, stone - so many things.
When I hit "RTS game", I imagined all sorts of things, like a food hall, a training gym, a rocket tower, sniper tower, field hospital, school, workshop (for constructing small items), machine gun bunker, and a number of other things.
Then I saw "collecting more resources from cleared out buildings", and I suddenly saw big hospitals, malls, gun stores, grocery stores, water wells, dumps, warehouses, barns, farms, offices, prisons, government safehouses, and vast landscapes.
Then, I played. Quite honestly, most of what I saw in my mind was crumpled up and thrown in the garbage... and perhaps it could be made true in a sequel. While the gameplay was good, I quite honestly expected more content, more to manage. I only feared lacking in survivors, not much else.