Round 51 original Der Riese Solo

The strat is pretty simple, get the Reaper and unpack-a-punched MG42, grind points on the catwalk for as many rounds as possible. In this run, I got to about 160,000 points before I had to leave the catwalk because guns are ineffective.
Then, you get the STG-44 for grinding points, and pack-a-punched double barreled for dog killing. Just run between electric barriers and teleporters while grind points through collateral damage.
When zombies stop spawning in after each one is killed, is when you train them together to grind out extra points if you need them. I thought 100,000 was too low so I tried to grind before the round was over, and one spawned in and trapped me while training.

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