Half-life: Blue Shift Easter Egg

[K00PD4WG]

In Half-Life: Blue Shift there is a small cardboard box located in Barney Calhoun's locker.

If the player gets all the ammo at the shooting range they can break this box with quite a few shots (its actually all the clips you can get at the beginning). The box then breaks revealing a removed alien enemy from the game (this monster is nicknamed chumtoad I think)

(unconfirmed part)
People say that this monster was to be exterminated but Barney kept it as a pet and hid it in a box that was almost indestructible.