1

Savage temperature extremes that overpower life support

2

Brutal radiation that induces many dire mutations

3

Frantic biosphere that throws of countless plagues

4

Murderous local fauna that infiltrate habitats

5

Near-intolerable high gravity that cripples natives

6

Psychic miasma that drives people insane

7

Maddening sonics throb through the atmosphere

8

Constant winds or rains hammer the surface