There's a lot of luck involved, but at some point you can get enough skill points to learn a skill that allows you to hit all enemies, or hit an enemy multiple times
Then just look for the strongest atk-increasing items and hope to kill all enemies in one shot. The slot above the GC slot allows you to equip an accessory that will give you stat bonuses when you level up. There is an item that will increase all stats on level up (by small amount, or medium amount). I would recommend finding that as fast as you can before leveling up too much so that you can maximize stats.
The other two girls that join you cannot be captured and raped initially because they have a passive skill that prevents it.
You can equip an M ring that will allow them to increase in ecstasy whenever they are not fully clothed and get attacked. At some point, there will be a new encounter at night where the third girl gets raped by a tentacle monster and loses her passive skill.
For the 2nd girl, haven't found the event to trigger it.
The biggest issue is the annoying level cap, how to reach past lv 30?
You're supposed to increase your rank at the shrine after collecting the required items and reaching the required level, and the new rank is supposed to increase your level limit.
But it doesn't work. In 1.00 anyways. I'm not sure if one of the patches fixes it because I don't have them.
that being said is anyone else having a crashing error around the light and dark dungeon quest? I keep getting a fatal error after I check the quest lists after finishing them, strangely enough when I first got those quests they were both 2/1 and I didn't even do the dungeon yet, has anyone else had this happen?
Definitely bugged. Will have to wait till that's resolved.
There are a lot of other subquests in the game that appear later on but of course we don't know what they are since we can't even access the quest list properly.