Every Playgrounder vs. a Space Marine

[GoC]

This is based on the "The Game: Playgrounders Vs. a Space Marine" thread but modified to include all playgrounders!

The situation:
You receive a package in the mail letter one day. Inside it is a small cellphone sized object that activates once the package is opened. A holographic recording appears:
Welcome, your name has been drawn for The Game. You cannot turn down this invitation as your opponent has already been brought to your planet. The Game is about survival, and the only way to win is to bring about the premature death of your opponent. You are not alone on this as every other person who has posted on the Playground has also received this message.
Here are the rules:
1. You are not to contact any police or military force about The Game. Doing so will result in immediate vaporization of you and your fellow Playgrounders.
2. Ten days from now at 1200 GMT you and your fellow competitors will be transported to an unknown, uninhabited mountainous and wooded location to fight against your enemy. Anything you are carrying or wearing will also be transported with you.
3. Your teams wins if you successfully destroy your opponent's body and gear.
If you win each survivor will be awarded 500 kilograms of gold. The death of every Playgrounder will result in your opponent's return to it's homeworld.
Have a nice day.

The cellphone-thingy then morphs into a fully functional and loaded Glock 23 with "The Game" embossed on the side. A small unremovable tattoo with The Game printed in black appears on your wrist.

The parameters of the challenge are as follows:

1. For the purposes of this thread Warhammer 40k as both a novel or wargame don't exist in your world.
2. The Space Marine is equipped with the following: 1 heavy bolter, 1 chain sword, Generic Power Armor. But he can take as many armor patches, spare parts, ammunition and civilian items as he can carry.
3. You are not capable of using any of the Space Marine's equipment should you capture it.
4. Neither you or the Space Marine are aware of who your target is. You are both given very big hints, but nothing truly concrete. The Space Marine is given information regarding earth at the same time you are.

Can you win or will the playground perish?