查到了……
The Core is a new secret map where the Dungeon Souls' core resides. The teleporter to access this level has a chance of appearing at the last dungeon of the game (The End). Its appearance is caused by an instabilityon the Core. Enemies in this map are specially hard and the boss can only be beaten by picking up Stabilizing Agents. Despite this, the rewards are epic - a new set of extremely powerful weapons
On "The End", a teleporter has a chance of spawning
看来是随机出现的……只掉落成长武器
剩下的图纸还是得去图书馆刷啊……
The Strange Rock is the key to teleport the player. It spawns on The Judgement's Level. The player must hold one of the following items: Compass, Magnet, Spiked Shoes, Butterfly Wings
顺便查到了鸟人巢的出现条件
There is no boss battle at this stage. Instead, there is a rather peculiar statue.
Triggering the statue causes a small instability on the Dungeon's Core.
The instability increases the chances of the Core's teleporter to spawn on the End level.
在鸟人巢里打开祭坛会提高尾关隐藏关的出现几率……

大佬翻译一下啊，高二英语水平不够用，第二段英语是说鸟人巢在丛林？