Ogre Expert

Ogre Expert is a Basic Collections achievement that requires unlocking all of the ogre weapon skins. The collection itself is unlocked by consuming an Ogre Tooth.

Achievement

Ogre Expert	Basic Collections	3
Unlock all of the ogre weapons in your wardrobe, and collect an Ogre Tooth. Unlock Item: Ogre Tooth Reward: Ogre Sharpening Kit Collection	Unlocked Ogre Tooth	1
	Unlocked 10 Ogre Items	1
	Unlocked 20 Ogre Items	1

	Collectible	Type	Subtype	Related item	Trading post (buy)	Trading post (sell)
1	Ogre Tooth	Item	Consumable		—	—
2	Ogre Cleaver	Skin	Axe	Ogre Cleaver	…	…
3	Ogre Dirk	Skin	Dagger	Ogre Dirk	…	…
4	Ogre Effigy	Skin	Focus	Ogre Effigy	…	…
5	Ogre Longsword	Skin	Greatsword	Ogre Longsword	…	…
6	Ogre Breaker	Skin	Hammer	Ogre Breaker	…	…
7	Ogre Harpoon Gun	Skin	Harpoon gun	Ogre Harpoon Gun	…	…
8	Ogre Hornbow	Skin	Longbow	Ogre Hornbow	…	…
9	Ogre Bludgeoner	Skin	Mace	Ogre Bludgeoner	…	…
10	Ogre Flintlock	Skin	Pistol	Ogre Flintlock	…	…
11	Ogre Blaster	Skin	Rifle	Ogre Blaster	…	…
12	Ogre Truncheon	Skin	Scepter	Ogre Truncheon	…	…
13	Ogre Bulwark	Skin	Shield	Ogre Bulwark	…	…
14	Ogre Short Bow	Skin	Short bow	Ogre Short Bow	…	…
15	Ogre Javelin	Skin	Spear	Ogre Javelin	…	…
16	Ogre Warstaff	Skin	Staff	Ogre Warstaff	…	…
17	Ogre Scimitar	Skin	Sword	Ogre Scimitar	…	…
18	Ogre Blaze	Skin	Torch	Ogre Blaze	…	…
19	Ogre Trident	Skin	Trident	Ogre Trident	…	…
20	Ogre Harbinger	Skin	Warhorn	Ogre Harbinger	…	…
Total					…	…

You do not have to craft the weapons yourself; you only have to unlock the skins.
The Ogre Bludgeoner shares its skin with the Chieftan's Mace, which is significantly cheaper.