Tutorial:
Fire Cannon at nearby cave
Defend your base
Charge cannon, fire again
Upon destruction, new locations will be made available, and the knight and healer would be with you.
Note: The first monster gal(flower girl) is from nearby cave
Chapter 1?
2 locations and target location(Monster's base) is spawned.
To the right, there is an old tower, where you meet your second monster gal (The penguin girl)
To the left, is the rocky area village. The wolf girl (sub heroine) is there. Capture her in battle, have sex with her and she will join you. She is a must get.
Chapter 2?
4 locations are spawned. The black fortress is the target (The main heroine mage is here)
To the left, you will find a cave in the mountains with 2600 HP (unicorn monster gal is here)
Old ruins cave to the right with 2900 HP (sub heroine android girl is here, must get)
Plains fortress with 3000 HP (water healing monster gal is here)
Chapter 3?
3 locations are spawned
Monsters' graveyard with 3600HP (Black knight monster gal here)
Village with 4000 HP (Dark elf sub heroine is here)
Tooth fortress target with 5000HP (One of the 4 demon generals are here, she is a sub heroine)
Chapter 4?
3 locations are spawned.
Snake's valley (Snake monster gal is here)
School of flames (Fire student monster gal is here)
Demon King's castle
Chapter 5?
Attacking the demon king's castle was futile, as they have a barrier. Destroy the towers that protect the castle. There will be 3 spawned.
The left is a tower guarded by an undead. He was the last I defeated in my first playthrough. Nothing additional came out of it.
To the center is a tower guarded by a gundam--- I mean a futuristic armor. "Capturing" him, would trigger an event with android sub heroine that gives you the strongest equipment I have seen.
To the right is a tower guarded by a beastman. He was a pain in the ass, but "capturing" him would trigger an event with the wolf sub heroine, giving her "Pride of the beastmen", a skill that when equipped gives 20% boost in attack.
Chapter 6?
After the barrier is down, you decided to start bombarding the demon king's fortress. However, it was futile as... Their fortress can fire shots too!!
The two cannons are on par, but the demon king is stronger! In order to fight back, you have to charge your cannon again!
(Choose your main heroine, I think it gives her ending at end game)
After stopping the blast, the demon king (or her clone?) attacks your base. Capture her and do your stuff~
Chapter 7?
Though it is TOTALLY USELESS, I believe it would be highly irritating if some random guy starts firing his cannon at you time and again. So the demon king's secretary comes to stop you (Sub heroine, but doesn't join you?)
After losing her secretary, the demon king feels lonely and looks so sad, and eventually comes out to stop you herself! Time for the final battle!!!
Tips Show
Sub Heroines after being captured, will join you after sex.
Monster gals after being captured, you can have sex with them for mana. After capturing about 10 or so, (not sure if scenes need to be triggered?) the monster gal will join you. It is possible to recruit more of these girls(I got 2 flower girls), but I am not too sure the requirements?
During Chapter 5?, if you chase the boss away without capturing them, they will reband and attack you time and again. It could be very tiresome, so you have to dealt with them sooner or later. The rewards (skill or equipment etc) is worth it, and it gives you an easier time later. Suggestion is chase them off and destroy the tower, camp in your base to capture the bosses. When they reband they usually have a smaller army size.
And with that, the game ends.