*According to the h-scene gallery (use book in house, second option), all h-scenes are automatically unlocked on virgin route ending (true end).*
Wake up, buy shit, talk to village mayor. Go to the notice board and enter the cave. Fight your way to the final boss and ignore the orange boulders blocking a stair.
After winning, go back to mayor again. Buy shit, go to notice board, fight your way through the forest (there's a chest stuck behind some tree monster that's currently unreachable. May be a bug.) Kill boss.
Back in village. Talk to mayor, not sure if you have to talk to the death god. Go to noticeboard again. The third option may have appeared. (If not check the well instead to enter alternate world. Can't remember the correct sequence) At the cemetry, check all the graves. Some contain items, and one contains key. Use key to open wardrobe in right hut. Fight your way through to the boss. Kill boss.
Back at village. Check well, enter alternate world. Talk to all the ghost villagers (especially the guy at the north most house). Back in real world, find the guy at the north most house and talk to him for an item. Go to notice board, enter laboratory. A few floor down there's a console that you can use to spawn a tank. It seems to lower your health over time though. Also, you can walk through the red pattern in the walls if they touches the road. Near the end there's a sign post on the wall. Go left to see a maze area. You can push or pull the boulders by holding z and using the directional keys while touch them. Solve the maze for bonus item, or ignore it. Beat boss to save mayor. Afterwards check the computer consoles for items.
5th map. If it's not there, just talk to everyone. As usual, fight you way through. Nothing special except the stairs immediately before the boss room. There's a very quick moving enemy down there. You can use the stones to corner him, or just rush him. Anyway, go to the boss room for a cutscene. A sage from the alternate world will join you for the first fight, after which you will have to kill the boss by yourself two more times. Btw, this boss seem to have a skill that onehit KO you if you are in horny status, so keep your MP topped up. Back to village.
Talk to guy in northern house for special item. Now go back to the final dungeon. This dungeon has a lot of puzzles, but the main ones are skippable. Just pick the second option when you approach the maze. Eventually you will reach the big platform with multiple paths and a minotaur boss. The bottom left path leads to this strange area with loads of white ball monsters. They are weak against physical attacks. Check all the chests for some nice items. The top left path leads to a ridiculously difficult maze with a special sword at the end. The path on the right leads to an area with loads of light balls. You can use the boulders to trap the light balls and clear the path. Anyway you decide to do this, all that remains now is the final boss. You think fighting the scorpion like boss three times is bad? This fucker changes color every time you defeat him and recovers to full health for several times. I hack froze my HP and MP and still took ages to kill him. Fuck this shit.
Ending. Do not quit the game - there's more afterwards.
Bonus:
Some of the blue chests cannot be opened initially, but after some point (3rd dungeon?) a red monster will spawn at each of the blue chest. Kill them to access the chest.
End game content:
First dungeon: Remember those orange boulders? You can now move them. Go down the now accessible stairs and kill the boss
Second dungeon: In the area with a river in the middle and two bridges across it, go to the top left. Go through the trees and then go top left again for a maze. Finish the maze for treasures.
Third dungeon: You can now move the orange boulders to go to a new area. Kill the the necromancer and his zombie army. The death god will then appear and thank you for breaking the seal.
What's next? There should be some more, but I am still trying to figure it out.