Today I'm talking to 4Shockblast, one of the best known speedrunners in  the Doom community, who you may know specifically for his 8 second run  of E1M1 or any of his other 3000+ runs on DSDA. He's also mapped for  many of the Abyssal Speedmapping Sessions, 50 Shades of Graytall, and  several other projects.  

We talk about the differences between Nightmare and Ultra Violence runs,  beating the E1M1 record, how to record a good tool-assisted Doom run,  and building maps for speedrunners.