Monsters in Witchcraft are powerful creatures which you can summon and challenge. Each monster has its own requirements, its own set of rewards, and its own limitations - time, minimum level, and number of players who can collect a reward.
Fighting against monsters is one of the core game activities in Witchcraft. You can defeat monsters alone or together with your friends, as well as share monsters with your coven.
To defeat a monster you should attack it using various kinds of attacks until its health drops to zero. Each monster has its own starting health and its own resistance to attacks.