iirc means "If I remember correctly".
Keep playing the game and exploring each floor, try getting the rogue ending after you get the true end and have the old witch ring so you get end game gear on new game plus. In order to get the rogue ending, you'll need to explore each floor and that will take time if you never searched the entire floor and found those extra adventurers to kill/rob/rape. The heroines are found after defeating the boss monsters that are on the 5th, 10th, 15th, 20th, and 25th levels of the dungeon. I've usually had to have defeated the 15th floor, backtrack to the 12th/13th floor and sneak into the thieves hideout, rape the female knight heroine, then upon leaving the dungeon went the rogue route. You might be able to get to it sooner, the game tracks your karma from negative actions (raping adventurers/heroines, killing/robbing male adventurers), and the karma value needs to surpass a certain benchmark (I think 70, according to the end game dev karma item) before triggering the rogue route. Raping the heroines give you a LOT of bad karma, and raping even one of them locks you out of the true end route.
Good luck!