Looking for the name.
2D dungeon clearing game. The mission was to save the king who was imprisoned in a dungeon. We would had a group of characters like archer, healer, the king, a knight etc to clear the monsters within each level of the dungeon before going to the stairs. When the characters gained enough xp they levels up.
There's a game on here before Flash collapsed and on Steam where it starts with a king talking, and all battles tended to be in a 4 vs. 4 format (sometimes with fewer characters). There was a 52-card set of achievements one of which was for killing each type of monster; does this ring any bells?