@KBAYSTSBIf you mean me then I'll probably never complete those - it's just the really horrible ones I've got left. Need to do those codex entries, the medal and the dog tags too at some point too.
BF1 really was great for things to unlock, it really was.
I need 10 kills with the Y-Lighter(tug boat),3 kills with the Coastal Gun and need 3 more kills with Hansa-Brandenburg Bomber to finish all the Codecs✌😁
10 kills with the Y is super easy. Play Cape Helles as British, pilot the Y towards shore and more towards the centre but make sure to pull up sideways, not straight on. Not going all the way to the beach will give you greater vision over the cliffs. Then change positions and start shooting. You can do those 10 kills in one round. Went 30-0 the other day without breaking sweat!
On the weapon count, I have 239/241, according to the game. Missing the Arditi and Coupe Coupe, as they were well before my time playing BF1.
But I am also missing the Doughboy M1911 (no idea how to get this). So, surely the weapon count must be 242? On PC.