Nether Locked
The player trying to enter the Nether, but they haven't done the correct research yet.
HUD With Level Bar
A close-up of the vanilla HUD with the Vault level bar.
Entity Attacking 2
The player attempts to shoot the villager, but again, they haven't completed the correct research yet.
Entity Attacking
The player attempts to attack the villager, but hasn't completed the correct research yet.