You have you walk into the ogre with the ogre slayer, it took me a while to figure out that the ogre slayer can't just be put down in front of the ogre.
Yep. I'll be honest here. That was just developer laziness xD. It's far easier to trigger an event by holding the item and touching the ogre than to make it recognize when the slayer is placed anywhere near the ogre.
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 "Dude and Zombies"){kind=icon}
 "Crystal Story II"){kind=icon}
 "Dead End St."){kind=icon}
 "Base Defence"){kind=icon}
 "Bubble Tanks 2"){kind=icon}
 "Diamond Hollow II"){kind=icon}
Yep. I'll be honest here. That was just developer laziness xD. It's far easier to trigger an event by holding the item and touching the ogre than to make it recognize when the slayer is placed anywhere near the ogre.