That one is actually outdated btw and there are better tricks now especially with some bugfix here and there along with the tutorial exp bonus.

Must have Petpal

-Do tutorial until everyone gets knocked out
-Kill the magister in the first room you woke up. Doesn't matter anyway
-Go up and come back down to help everyone then finish the tutorial

-Get the Red prince (always, best husbando material. Actually, you can ignore this step but I recommend it or you're a heathen.)
-Get to town. On the way, collect a Yarrow flower
-Do the part with Ifan protecting the elf
-Recruit people
-Go talk to the weeping mother and do her quest
-Climb up the ladder, talk to Magister, accept her quest to find Migo
-Climb back down, walk past Gawain, he will give you a quest for teleporter glove. Just accept the quest for now
-Watch the guy arguing with lizard dude that gets stabbed. Kill the guy for hurting the master race. You can trigger this with ease with The Red Prince dialogue

-If playing with the Red Prince, get attacked, another free kill.
-Talk to the women npc and tell her about your experience and get her to talk about her family and son. Listen to her. She will give you a restoration scroll. Do this on everyone for 4x restoration scroll.
-Go to the kitchen and enter the hatch to discover the arena of the one. Leave instead of doing fight. Just unlocking area for exp.
-Go to doctor leste with a guy about to die. USe the restoration scroll on him. This gives you EXP.
-Walk past the cave near the doctor. You will see Migo. Give him the Yarrow flower. He will give you a ring with restoration.
-USe the ring and take turn heaing the same guy doctor Leste is treating again. You will get exp for each person healing him. The ring will allow you to save the scroll.
-Talk with the dog to learn about Emmie and get a key.

-Go to the cave the elves are hiding in. Do hide and seek with the kid to get to Withermoore secret location.
-Accept the quest, go back to the shrine in town to get into prison.
-Sneak to grab the key at the houndmaster part and return to the large door in the middle
-The room near the stair going up is the source hound room. TAlk to the dog and mention buddy and how he misses Emmie.
-Go inside the room with houndmaster crossbow (Super strong Ranged weapon get), talk to the dog, grab the key and persuade it to live on.
-continue to do Withermoore quest and complete it.
-With the bow, Teleporter croc are very easy. Kill them. Get the glove.
-Return to the first waypoint with the kids by himself, teleport up the broken stair case and get to the hidden area with the sword (strong warfare weapon get). Grab the Curio chest at the end for more magical gear.
-Return to prison, the inner left cell (across the one with the decaying elf) is another secret room giving you a necklace and free exp
-Return to the elf cave and go in deeper. There's a spot you can teleport up for more exp.

You should have enough weapon and exp to really do anything you want by then with little to no combat, just running around talking for an hour or so and you can beat anything outside magistrate bosses and the large grup in front of the gate with ease.

This kind of pathing is something anyone planning to play Tactician should know as the game pretty much hope you know what you are doing now the moment you play on that mode.