Railgun Only, Tilted Towers POI - FFA

You've spawned into Tilted Towers, You only have a railgun and 6 Shockwaves.
Anyone else who joins gets the same. Once you leave the weapon/vending room it's time to FIGHT!
First to 100 Elims or after the 30 min timer runs out who ever is in first WINS!
Only weapon is Railguns and everything is 1 shot 1 kill as everyone has 10 health. 
For a TWIST - you can GAIN health by purchasing items from the vending room. But there are limits to keep it one shot ish.