Well the best way to start out by your self is going to quick revive as the player and lay down in front of it, it will give you 100 points and all perks do it except stamina up. Then buy the first door and as soon as you do that you can cook a grenade till the cross hairs expand 3 times then throw it into the window to the right of the door way (laundromat) at the white card in the corner and it will disappear then hold the action button and you will get 500 points. So then go to the beast mode in the start room and zap quick revive, then melee the door across from it, the break the crate on the back of the truck, then zap the crane in behind the food stand, then turn around and grapple up and run through the room and out the doors all the way past that little building and down the stairs and zap the power box to open the stairs. The junction and easy street is all good besides stamina up.