How can I steal the relic?

Hint 1 of 6:

You can try to beat up the monks.

Hint 2 of 6:

But they seem to take tons of hits.

Hint 3 of 6:

Simply pick up the relic and run to that hole in the library.

Hint 4 of 6:

Run through the dungeon until you reach stairs.

Hint 5 of 6:

This will lead you to the guy where you got the knight's sword.