Halo MCC Custom Maps - The Edge Of Peril (Beta)

Times are tough, the brutes are storming the cities on earth. Jim works with Johnson to try get some ground from the corner they've been pushed to.
Storyline -
After a heavy firefight with many casualties, you and your team have been pushed back into the edge of the city. You are trapped and can't lose any more ground. Johnson orders you and your small team of ODSTs to move out and secure Miranda and her team and escort them back. Meanwhile Johnson and his marines defend what small area they have left.