Quests
 

There should be quests you can do for certain items such as unique rings/weapons/armor/etc. Like when you are on the newbie island you do a quest for some newbie armor. And when you get to the main island there will be specific quests for certain levels. Like "Slay the T-Rex" and you go and kill like 10 T-Rex' and go back to the NPC who told you to go and kill them and he rewards you with a item or experience.

-Mikoto

How unique is it really gonna be if everyone can do it?

But I concur, there are chests that don't open and that's bad. It's alright the way it's set up with silver warrior helmets randomly dropping in The Big Monster Room, but there should be more of a prize for escaping a haunted house than an empty room and an exit. A chest with a prize you can only get once or so - it's full of Suits of Scale Mail, but once you get yours it clamps shut and won't open for you again. Something like that.

Tyhm, the silver helmets dont randomly generate. Whenever someone beats the last room a item or money shows up in each corner and sometimes the middle of the room.

Isn't that exactly what I just said?

Level 3
 

I am level 3 now. And Yes.