It's a nice idea, and destroying buildings with the killdozer is very satisfying, it's just a shame it couldn't also kill zombies or break ammo crates (I ran out and couldn't get any more because you need ammo to shoot the crates!)
The voice acting was surprisingly good - was it AI? I know AI content is technically not allowed, but I'm never sure if that applies to voice samples (imo AI voice should be allowed - it's not like you can be expected to hire a professional actor for a game jam!)
It also seemed that the steering for the dozer was backwards?