Just wondering which weapons were in the game, would be nice to know before I jumped in.
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The Blood Spear is just the Saw Spear except it's a Bloodtinge weapon and not a Quality-veering-toward-Skill weapon now. Location is on the rafters hanging above the rats and by where you meet Eileen. Hit it or shoot the rope down, drop below and pick it up (there's another rope that gives you a single Twin Blood Stone Shard).
Tonitrus drops from a hunter who attacks you with it and A Call Beyond in the library section of the Basement area.
The Double-Barrelled Shotgun is found in a room in the poison sewers where a single dog guards it.
I don't know about Blades of Mercy, I presume they drop from Eileen if you kill her or you do her questline (which I've read is in this game, helping her kill Henryk, I haven't done it or know the details of that one yet).
Torch you pick up by the shortcut you open up that leads back to the Great Bonfire lantern.
Saw Cleaver, Threaded Cane, Pistol and Blunderbuss... whichever ones you didn't pick at the beginning, you can buy from the bath messengers in the Hunter's Dream after getting the Saw Hunter badge from killing Cleric Beast.
Well a number of people have full playthroughs and streams of this game on YouTube. Distortion2 has a playthrough over 4 hours, LobosJr over 5. Those are the ones I watched.
There are shorter videos by AlphaBetaGamer and ManlyBadassHero, the former is 50 minutes and the other one was about 2 hours I think? I haven't watched them yet. They apparently reveal all the known secrets and things to find in the game known at the time.
I realized I didn't include the Flamesprayer in my list! You can get it by talking to Gilbert (the man at the window by the Central Yharnam lantern) after you defeat the Cleric Beast, but before you defeat Gascoigne. (It might technically be after you interact with the Great Bridge gate and before you interact with the Tomb of Oedon gate, I'm not sure what the actual triggers are.)