To vas - I didn't really need to, it's by far realistic enough for me since I have it on very hard and on hardcore with new FPS basically everything dies as it should in real life. You take 1-3 bullets before death with my current armor and so do things like geckos but a securotron can shrug off that much rather realisticly since its a small tank, it turns normally boring encounters like that into difficult bosses. I highly recommend it to everyone.