Oh dear god, what have I done!?
The armor is Remnants Power Armor http://fallout.wikia.com/wiki/Remnants_power_armor
Unarmed with Ballistic Fist or other melee weapons get really powerful with level and challenge perks.
For those wondering the different Pip-Boy icon is from this mod: http://www.newvegasnexus.com/downloads/file.php?id=34720
And no this is not part of the game as an easter egg. I was messing around with modding by changing textures and sounds.
Appears on these pages
Needs moar RobCo tech...