Dig is IMPOSSIBLE.
I don't care if you have it, I don't care if there are guides...this achievement is IMPOSSIBLE.
...maybe not...but seriously, I can't do it. My patience is gone. I've been trying for months and months to clear a screen and get this achievement, and I just cannot do it. The longer I last, the faster the enemies get, and they eventually get me.
100% Arcade  | 100% Retail 
20k on 12/19/10 | 30k on 06/27/11 | 40k on 06/16/12 | 50k on 06/30/13 | 60k on 06/20/14
Sig courtesy of DethHolly.