This is a vanilla playthrough of Final Fantasy Tactics with an extreme ruleset: We are not allowed to spend any "job points" in this playthrough!
Whenever a character executes an action on the battlefield, they earn experience (slowly bulking up the character's base stats) and also earn job points. Spending job points is how most playthroughs earn crucial skills necessary to progress through the game (e.g. Cure, Potion, etc.). Beating the game without access to any skill is not possible.
There is another method to earn skills, and it depends on much RNG. When a human unit perishes in the battlefield, they either became a treasure chest or a crystal (whether a corpse becomes a treasure or crystal is purely random). Collecting the treasure chest merely gives the party a new item. The crystal, however, may be collected for one of up to two uses. The unit that picks up the crystal may optionally restore all HP/MP on themselves; this is always a choice whenever harvesting a crystal.
Sometimes, however, there is a chance for the unit to gain new skills. If the human that perished and turned into a crystal had access to skills that were not yet available to the person collecting the crystal, then there is a possibility for the option to learn each of those skills. For example, if a Chemist uses Phoenix Downs in battle, it is clear that the Chemist has learned the skill "Phoenix Down;" if that Chemist perishes, and if their corpse becomes a crystal instead of a treasure, there is a chance that someone who does not know the skill Phoenix Down may learn it by collecting that crystal.
Thus, our goal is to harvest crystals from human corpses on the battlefield to learn new skills on our characters. And even then, the run depends on a lot of luck, since this is all up to chance.
This guide explains more thoroughly how the crystal mechanics work (see section 6.1). There is one final method of learning skills; most people who know this game well are familiar with Ramza being able to learn Ultima through a third method. Section 6.4 of the guide linked above explains how that mechanic works (note that there are some lesser known magic spells that may be learned through this method).
Yes! If you'd like to see how our previous two runs ended (which skills each team member learned by the end of the game), check out this archive on our first Vampire% run as well as this archive on our last Vampire% run!
While attempting this challenge, we discovered that sometimes this challenge can be unnecessarily cruel, and we also discovered one method to exploit the game despite the No JP restriction. So, we have come up with two rules that help balance the challenge.
Below we've noted all skills available to each of our main characters that we are using in this run. At any given time, a character has access to the primary command skill available to their current job, and they may optionally equip up to four more types of skills:
Squire