Just hope you don't get Berserker!
FE13 - I beat this, for the second time. Played on HM Classic again, it is kinda where I like my FE difficulty overall. Used Pair Up a lot this playthrough. Pair Up is kinda dumb but nothing new there. At least Paralogue 17 exists, I already liked that map and would consider it a good one in any other FE game but the way it puts a far greater element of risk to Pair Up makes it easily the best in the game I feel.
Unit notes...
Chrom - Grew well, managed to be generally very solid (good stats everywhere) but in a way that was never super-notable. Ridiculously high double attack rates with Sumia does stick out, though. Went Paladin towards the end for bonus move.
Sumia - Ridiculous speed (even for her), kinda eh otherwise, though nice Res/Avo (and not horrible Def) did stand out some. Strength could be better though picked up at the end with Lancefaire. See Chrom double attack comments.
Albert Silverburg - Had +HP, -Luck. Was pretty solid for a while in that "mage with good overall stats" thing that Avatar does (HP was definitely nice). Later on he decided to stop gaining speed ever. He finished the game with 23 despite having gained something like 46 levels overall (and his flaw did not influence speed). After he got Rally Spectrum I switched him into Dark Mage->Sorcerer for Hex/Anathema/to gain some extra levels for speed (which didn't really work out) but hey you can never have too many dark mages.
Tharja - Is Tharja. You can never have too many dark mages. Good stats in the places that matter. One of my best PCs then she died due to shenanigans I detailed last week.
Say'ri - Great speed, surprisingly solid durability, we know the story here. Wounded in Chapter 23 because I failed to notice one of the assassins had killer instead of silver (and it only barely killed her). Something about FE13 makes me occasionally a bit lazy about checking enemy weapons, but I can't quite put my finger on what.
Sully and Stahl - Were two of my better PCs for a while early. Once other PCs started promoting they started to feel less and less special though, so I ended up benching them. Still, mobile, and good overall stats (mostly Sully, though Stahl had better speed than average so he was pretty good too).
Lon'qu and Cordelia - Cordelia got RNG screwed and Lon'qu... just didn't feel that impressive at base. I benched them as soon as they gave me Sevara. Then I ended up not doing Sevara's map because RNG-screwed parents = lol child and I've recruited her before anyway.
Maribelle and Henry - Maribelle did that mounted healer thing. Henry did his underlevelled dark mage thing. Both died to the same ninja reinforcements in one of the maps I wasn't FAQing, how sweet.
Panne - Reclassed her into Wyvern Rider ASAP. She smashes things pretty well despite weapon problems early, and managed to hit A in axes by the time I hit Chapter 22 and got the Helswath. Res kinda sucked but good Def/Speed and amazing Str/HP. Went Griffon Rider and paired with Gaius so she had 11 speed post-pair up. I should have given her the boots clearly. Could survive forged Silver Bows if need be which was nice.
Gaius - Making Panne faster and more mobile. He was decent in his own right, particularly once he picked up Lucky Seven for a big durability boost. Locktouch and Trickster in general (staves, Lucky Seven) always makes him feel a bit better than Lon'qu to me despite slightly lower stats.
Libra - Backup healer, only deployed when I had spare space. He had like 21 speed. I sent him into the final chapter which is pretty much the ultimate death sentence, and sure enough he was doubled and one-rounded with 100 accuracy after firing off a Fortify or two.
Anna - Like Libra, but more consistently deployed due to various reasons (Locktouch most obviously). Also never gets as frail and had some Levin Sword smash for a bit midgame. Late she mostly entered pure support unless I needed healing.
Tiki - Solid tank PC who can deal out some 1-2 range damage. Then she hit Level 30, and I gave her a Second Seal. Um okay holy crap. Absolute MVP of the last few maps, godmodes all stats with 1-2 range. Can't one-round the generals unless Anna procs a weakness-hiting support attack (Armourslayer) but everything else is ridiculous. Got hit by the final's Ignis and barely even noticed, her Def was over 50 and her Res over 40. I kinda want to see what Nowi/Panne would do in this situation since they do reach it earlier but their stats (and in Panne's case, base class) are much less powerful to start with so it's probably less OP.
Basilio and Flavia - They're okay lategame filler. As usual Basilio is the best archer in this game. (...) Flavia's fine all-around just unexciting.
Lucina - See Say'ri more or less, only with higher strength before the latter picked up Lancefaire. A bit better than Chrom overall? Similar though. Unlike Chrom I left her in lord to have someone swing around a rapier. (Also she got move from her Pairup anyway...)
Kjelle - Speed sucked, res sucked, but good str/def. Standard knight fare really, but Great Knight really helps them. Decent move! Makes supporter more mobile! Lucina gave her loads of speed to boot (and she gave Lucina loads of str/def) so that partnership worked pretty perfectly.
Cynthia - A lot like her mother (speed!) but generally a bit worse, mostly due to weapon ranks and lower level meaning she didn't actually pick up Lancefaire. Is a real hero though.
Yarne - I don't like the taguel class much, so I made him into a Barbarian -> Berserker since I've never used that path before. Anyway, monstrous HP/str/speed, shoddy Def and awful Res. Most fights involving him seemed to be Yarne giving and receiving 40 damage a hit, but with Yarne hitting twice. This worked... okay! Final fight was too rough for him, though; he died, and his partner in crimefighting went with him.
Noire - Looked bad, so I held off on recruiting her until she had Rally Spectrum via her father. Pretty much all she was good for. Like Libra I sent her into the final battle knowing it was a death sentence, and sure enough it was.
Morgan - Were it not for Tiki going crazy, she would be my strongest PC towards the end. Started as Dark Mage due to Tharja, went Sorcerer until Tomebreaker then Dark Flier. Giving up dark magic was rough, but I can't say no to a flying mage, especially since she inherited Albert's HP and Tharja's defences and could eat forged weakness-hits and live. Her mag/speed were great... only dump stat was luck, really. She ended up doing the most damage to the final boss despite not having a falchion, says all you need to know.