The way I see it, everyone has to take a beating sometimes.
High Density is a soak mutation that adds Beat and Bullet soaks. It's also the prequisite for Lithodermis.
HD is in Maas Neotek, at the Medgentech Kiosk. See MK on the map. From there, and head down. You may run into hepcats in this area, which are dangerous to low-level players; usually, it's possible to run past them.
This mutation grants:
+3-5 beat resistance +1-4 bullet resistance
- 3-5 beat soak. Beat is a mildly uncommon damage type in PvE (outside of the early game), but does crop up with junkers and some other mobs. In PvP, beat is more common, so this soak is medium- to high-value.
- 1-4 bullet soak. PvE bullet damage is rare outside of optional areas such as the Skydock and Glowstiller, but in PvP, this is probably the most common damage type in the game. However, when you are facing guns you'll either be armored to the teeth (making 1-4 superfluous), or else caught off-guard without soaks or with elemental damage (in which case 1-4 won't do much), so this is a low- to moderate-value soak.
High Density has no disadvantages aside from taking up a mutation slot and one of three available soak mutation slots.
High Density does not make any changes to a character's appearance.
|Racial Mutations||Abomination • Chromemouth • Chud • Empath • Genetic Purity • Hideous Freak • Vampire • Zombie|
|Focus Mutations||Carrie • Chiller • Fuck Machine • Salamander • Screech • Writhing Smoke|
|Movement Mutations||Leapfrog • Phaser • Clairvoyance|
|Flight • Blink • Medium|
|Soak Mutations||High Density • Firewalker • Rubberskin • Snakeskin • Yeti Skin|
|Lithodermis • Solar Sponge • Silicone Skin • Eelskin • Yeti Fur|
|Miscellaneous Mutations||Billygoat • Bleeder • Bloodhound • Brainslug • Brute Strength • Camelfat • Enigma • Fibrocartilage • Hooligan • Hyperimmune • Iron Liver • Junkrat • Mule • Nimble Fingers • Plant Whisperer • Ripper • Stench • Twitchy Nerves • Superclot • Xray Vision|
|Joke Mutations||Cat Ears • Caucasian • Third Nipple|