Sengoku Rance

The plotline will eventually drive itself along regardless of what you do up until the halfway point, but the auto-progression is pretty similar in speed to how fat you'd naturally progress.

A few turns after that major halfway point, you'll get roflstomped and it'll look like you're utterly doomed, however your enemy's intial strength doesn't hold up, and I think you'll eventually enter the third phase just by defending and slowly taking back territory you lost. The speed at which you dominate the country can accellerate this, but I think the enemy will be inevitably exhausted after a limited number of turns, assuming you consistantly defend after the initial pwnage.

Once you enter the third phase, and you have most of the country except the southwest end, you have unlimited time for a while. After you take enough territory, you'll enter a point of no return where you'll have a set number of turns to finish invading the "Morocco" territory and do a storyline event. If you're unable meet the time limit for some reason (unlikely as the fights before that are more difficult), you can just reload and to a point before that and farm satisfaction/gold until you're strong enough.

After entering the route, you'll have roughly 30-35 turns to meet the main criteria before your opponent beats you to it. After you complete the main criteria, I think it's a similar situation to the normal game, where you'll have unlimited time to take a set amount of enemy territory, after which the clock starts ticking... fast.
I'm not positive of this though. My conquest was interrupted prematurely, and I'm not sure if that interruption is based off turns or territory, it just happened to correspond to about the same amount of territory gained in the main path.

The game will progress naturally based on turns passing. Your existing enemies should be eliminated quickly, because its my understanding that you'll start losing commanders every few turns while they're alive (I never lost anyone to this mechanic so I'm not positive).
Hopefully that will be taken care of before the next story event. You have to do actions in a ton of territories spread around the country. You'll have technically unlimited time, but you'll lost power every turn until you're done, so unless you want to rebuild every turn, get it done quickly.
Once that phase is completed you have unlimited time to defeat the last boss.

I think this route probably the most time/event constrained. After the main storyline event is resolved you'll have unlimited time as long as you don't take Senken Nagato. If you do, you don't even need to take cairo like in all the other paths befoer the point of no return.

http://alicesoft.wikia.com/wiki/Sengoku_Rance:Walkthrough
One Eyed House

* Territories

エゾ (Ezo), 奥州 (Oshu)

* Basics
o To declare war on them, you must first do the ??? event in their territory. Then a new event battle should appear in Saitama. After doing this battle, you can declare war on them.
o After taking over the last One Eye territory, there will be a duel between Rance and Masamune (with Sill supporting Rance if she is available). Masamune will heal himself to full health using eyedrops whenever he drops under 50%. To counter this, first recruit Nogiku, Orime, and Noir, as well as defeat Omachi's unit in battle (and trigger the event after battle), then pick a Purple Event in the One Eye House territory to learn from the three girls how to fight Masamune. If this event is triggered, Masamune will still use eyedrops only once, but subsequently that move will be disabled by Rance and Masamune will no longer be able to heal.
o If the Tokugawa House is still standing while you are fighting the house (Regardless of it's affiliation), at some point, One Eyed Masamune might take control of it.

* Noteworthy captains
o One Eyed Masamune - Will join you randomly after you defeat his house
+ In 1.04, he will not join if any of Nogiku, Orime, or Noir is cleared (originally he could join even if all three girls are cleared)
+ will not join if you in 56 route (but it is safe to recruit him first then enter 56's route)
o Omachi - Defeat her unit in battle to get an event where she turns into a stone. Then after Masamune joines you, get Masamune up to Trust, and then an event should occur where she joins you.
o Nogiku - Defeat her unit in battle, rather than just winning the battle. Afterwards, she will be captured.
+ Requirement! You have to recruit Akashi Kazemaru who MUST have Hibachi as his passive skill.
o Orime - Defeat her unit in battle and she will be captured. Requires a ninja (Suzume is enough).
o Noir - Defeat her unit in battle and she will be captured.

I completed Ran's path with the Ran character-clear. I really hated that she stayed with Rance. And I thought she was like the only charcter with some integrity. At least she stays true to Soun if you don't boost her relationship; sadly that's kind of a hard thing to do given the easiest way to character clear is to get everyone in your party then use satisfaction to raise everyone's affection level.