This show is astounding! Thats all I can think of, I just got finishing watching the first OVA and now I'm getting the second (only two). At first it got pretty bland according to a lot of other anime out there, but after a little bit it gets crazy, lots of blood, "Guyver-esque" armor, and some really freaky stuff.
Albeit it's old, but I like it. ^ ^
WARNING: If you have no sense of humor about the sight or use of (any) body part(s) in any fashion, or do not condone the sight of either massive amounts of blood, or gruesome/grotesque deaths. Please stay away from this anime.
But, if none of that fazes you then I suggest you see it.
You can either find it listed under "Apocalypse Zero" or "Kakugo no Susume"
(Only reason I'm saying this is when I got the first OVA it was listed as the second one.)
[Update] Here's the link to the site where I found it:
http://hsbsitez.com/files-collection-downloads/664/Apocalypse+Zero++OAV+
