|Sickle to Sword|
Sickle to Sword (I Am a Weakling in the Japanese version) is Paralogue 1 of Fire Emblem: Awakening.
Donnel joins the party after this chapter only if he levels up at least once.
Two chests are available which contain a Killer Lance and Rescue Staff.
As the first optional fight in the game, the enemies may be slightly tougher than what you'd expect when the paralogue first becomes available. The map is littered with barbarians, archers, and thieves trying to take you down. Sword users are invaluable on this map since they'll have WTA against axe users and no WTD against thieves. This is a "defeat commander" map so it's possible to head straight for the boss, but then you'd miss out on the great treasure that's available.
Your army starts out in the southeast corner of the map. There's a forest filled with enemies to the north and a fort with enemies to the west. You should immediately send some units (preferably sword users) west to deal with the barbarians, and a few ranged units north to take out the archers. DON'T FORGET DONNEL! On the easier modes Donnel can be put to use immediately and will become a strong unit thanks to his unique skill Aptitude. However, on the harder modes Donnel may be harder to train in real battle so it's up to you if you want to bother recruiting him. One good strategy to help level up Donnel is to weaken an enemy to 1-3 HP and then let Donnel finish them off. Donnel will receive 40 EXP per enemy, unless the enemy is a thief in which Donnel will receive 60 EXP. Another good strategy is to corner the archer in the northwest corner of the map near the 2 chests and have Donnel pick away at him. One enemy kill plus all the work he puts into killing the archer will get Donnel leveled up as well.
Frederick or any other mounted unit can be used to quickly travel west to intercept the thief that will try to steal the killer lance. It is possible to complete the next few chapters without it, but it's free and it doesn't hurt to have it. Plus your units can get extra EXP from killing the thief. Once Donnel levels up and the killer lance and rescue staff are collected, kill the boss and the village is saved!