Definition of Immunities

From AmtWiki

Having an immunity does what one would expect. You can not be harmed by that specific thing.

For example, having an immunity to traps would cause you to not be effected by traps. Immunity to poison, prevents you from dying in 100 count from poison.

List of immunities (for standard classes):

Control
Death (It means death magic)
Flame
Poison
Subdual
Traps

Glossary definition of immunity