>>96174812
M space is it’s own book
It also has weird as fuck formatting

Anyway for super heavy power armour or exosuit up to 15 AP a -20 armour penalty
Maybe 10 or 12 is much more reasonable, characters wearing such a suit will be night impenetrable to small arms fire unless they are attacked with armour piercing weapons
damage mod provided ranges from 1d6 to 1d12

If you want to be reasonable with the armour rating and not have the wearer be an indestructible tank
Have the suit provide 6 to 9 AP instead and a -10 armour penalty
And have it also provide a damage mod

I’ve mostly been using the M space companion because I run post apoc stuff and it has all the cyber ware but it’s been a while since I’ve looked at regular M space
It’s a bit strange compared with base myhtras but has some good guides on creating alien creatures