Ultima II: The Revenge of the Enchantress/Enemies

Overworld enemies
An enemy that can drop an item will always drop one item upon defeat.

HP are inversely proportional to the frequency of encounter. E.g. an enemy with few HP will appear very often, while one with lots of HP will appear seldom.

Player-type characters (thief, fighter, wizard) can be met both in the wilderness and in town. In town they will not attack the Stranger. Clerics are met in town only.

Townsfolk
These characters are met in towns, and they will not attack the Stranger. If the Stranger attacks any townsfolk, then all the guards in town will attack her. Defeating a guard is the only way to earn keys, but guards are one of the strongest opponents in the game. The HP of townsfolk (except for guards) is variable, but usually quite low.

Dungeon enemies
Orcs, daemons and balrons that dwell in dungeons are more resistant than their counterparts that are met in the wilderness.

In most ports of Ultima 2, dungeon monsters have a monochromatic white/grey sprite. In the DOS port, instead, they are tri-chromatic (3 colors).

Monsters are always met starting from a specific floor. The two major obstacles are the ghost (need lots of torches) and the gremlin (if the Stranger runs out of food, she dies instantly).