Side quests in Trails Of Cold Steel 2 are given to you each act. Some of them are easy to complete, but some are completely hidden unless you speak to the right NPC. Check out this Trails Of Cold Steel 2 side quest guide to complete them all.
Act 1 Side Quests
This is your first side quest that you get in Celdic. You need to speak with the priest at the church and then head to the Nature Park on the West Highway. When you are in the park you will see the herb on the map, grab it and return.
Munch No More
You also get this quest when you arrive in Celdic, but you can skip it if you want. Head to the East Celdic Highway 2 and you will see the monster on the map. The monster can hit hard and is weak to fire. If you have your S-craft up, use it and inflict some serious damage.
A Cry For Help
Your first hidden quest can be found at the Twin Dragons Bridge Celdic Side. Speak with the guard and the civilian on the left side of the bridge and the civilian will run off. Go back to the East Celdic Highway 3 and run as if you were heading to East Celdic Highway 2. About 75% of the way there an event will trigger. After the event look on your map for the green mark and go there for a fight. Kill the enemies, talk to the merchant and return him to Celdic to complete the quest. You can fast travel back to the bridge after you complete this quest.
Terra Shrine Optional Dungeon
This is not a quest but completing it now gets you three bonus AP. You can find it on the Garrelia Byrod 2.
Leaf It To Me
You can get this quest by speaking to the kids in Ymir when you return there. You need to head up into Ymir Valley 1 and 2 to find the items for the kids. After you get the leaves, return to the children to complete the quest.
This is a simple kill quest, go out to the Highlands and hunt them. Turn the quest in at the elder when you are done.
Speak to the girl near the sheep and she will ask for help finding her horse. First warp to the Nord Highlands Northeast and go to the mark on the map. The horse will run further into the map so find it again on the same map. Finally, it will end up back at the Nord Settlement(settlement site).
This hidden quest is found in the weapon shop of Zender Gate. Talk to the two soldiers by the weapon shop and they will ask for some help. Go out to the Nord Highlands – South area and go to the green mark nearest the Watchtower. Interact with the item there and return to the men to complete the quest.
Another optional dungeon that you can find in the Nord Highlands – East. If you complete it you will be rewarded with more AP at the end of the chapter.
Speak to the woman behind the counter at the goods store while you are back in Ymir for your free day. You have to go to all the markers in town and speak with everyone. When you get to the chapel you will be given the item you need.
Arseid School Training Bout 2
If you played the first game you will remember facing these students before. Now you are going to face some tougher competition. They hit hard, but can easily be dealt with by using Delay crafts.
A kill quest, found on Ebel Highway 2. It is weak to fire and earth so prepare properly.
Optional Dungeon for extra AP can be found on Ebel Highway 3.
St Veronica’s Tears(Hidden)
This quest can be found in the Cathedral of Bareahard. Talk to the sister in the left room and she will give you the quest. First you have to check out the statue in the central plaza. Then head to Station street and take the stairs down towards the water. Follow that path to a door you can go through and enter. Clear the area, hit the switch, kill the boss, and return to complete the quest.
You can find this quest at the Central Plaza. Go down near the water and speak to the old lady near the gate. She wants you to help her find her cat. Go up the stairs and speak to the couple at the cafe. Next go to Artisan’s Street, Station Street, then go to North Kreuzen Highway and speak with the green questions marks there. Open the map on the highway and you can find the cat at the end.
Stranger Than Fishin(Hidden)
When you get back to Ymir, speak with the guy behind the bar at the Tavern. He wants you to go out and find the fishing girl. She can be found on the Ymir Valley 2, fishing at the bridge. You will have to catch a fish and then you will get a boss fight. After you beat the boss, the quest will complete.
from GamersHeroes http://www.gamersheroes.com/game-guides/trails-of-cold-steel-2-side-quest-guide/