The VOIDRUNNER'S CODEX is coming! Explore new worlds, fight oppressive empires, fend off fearsome aliens, and wield deadly psionics with this comprehensive boxed set expansion for 5E and A5E!
I did it the other night. But it would have been pointless to roll it out. Our venue was closing in 15 minutes, the enemy CL5 was down as was his 4 CL2 acolytes, 12 skeletons, and 10 zombies. If 8 PC's can't take down 2 zombies, they're doing something wrong!
You might also want to look at httP;//www.tekumel.com
Tekumel came out in 75...very detailed, non-European world with strange non-humans. Even has developed languages. There is a d20 version out on the net.