Last time I played something comparable was Dungeon Master 2 almost 20years ago. This game has essence of the old school RPG dungeons - 13levels full of creatures, puzzles and traps, spells and skilks your team members need to master and - last but not least - moments of real, existential fear for life of your party. This is how games used to be in the golden age - hard as hell, but fun and addictive...
holyj about Legend of Grimrock