Lanscaping Simulator [prototype]

You are a landscaper and got a job to tidy up someone's yard for a bbq they want to have the following day. As you are tidying up the lawn all hell brakes loose and portals start ripping open in the skies, unleashing hordes of demons. In all this chaos only one thing remains on your mind, your sacred duty of presenting a beautiful lawn the next day. Defend your tidy lawn and preserve the tidyiness against all odds... Or you will not get paid.