Great job, man!
When zombies hit my place, I'll definitely have to refer to this Flash. Well done, indeed!
And if you're up to it, you could make another Survival Guide, this time on the enemies from the game Dead Space we all know as the Necromorphs. I mean, it's possible to happen, and it would really help all those avid Dead Space fans out there, including myself.
Apart from all that, I look forward to seeing more SG's from you in the future!