Mentor Knight

"Ah! A new challenger! Welcome to my proving grounds!"

Mentor Knight is an NPC in Dead Cells. They organize the boss rush challenges.

First encounter

 * "Ah! A new challenger! Welcome to my proving grounds!"
 * "Here, you can fight your most formidable past enemies one after the other."
 * "Should you triumph, you'll receive wonderful rewards and the people (or what remains of them) will sing your praises for years to come."
 * "And if you find it too easy, your opponents have prepared new fighting techniques to surprise you! Try completing the challenge without getting hit!"
 * "Go ahead! Test your mettle!"

First Boss Rush

 * "Good, I see you chose to enter the fray!"
 * "I prepared a few items taken from my arsenal for you. Go ahead and gear up!"
 * "One of these little creatures is also there to help you."
 * "Whenever you're ready, just go through the door at the end of the corridor. Serious business begins there!"
 * "If you get cold feet, you can always come talk to me to abandon the challenge."

When entering Boss Rush Zone

 * "Welcome to the Proving Grounds!"
 * "Ready for the next showdown?"
 * "Glad to see such a determined face... or whatever it is that sits on your shoulders."
 * "Go forth, prisonner, and prove your worth in battle!"
 * "Craving for thrills? You've come to the right place!"

When starting a Boss Rush

 * "You're back to the crucible of combat!"
 * "Glad to see that you're not afraid to face some challenge."
 * "What will you try this time?"
 * "Time to choose your weapons!"
 * "How far will you go this time?"

Between bosses

 * "Well fought! But don't rest on your laurels, your next challenge awaits!"
 * "One down! Onto the next."
 * "Who will you face of against next? Fate will tell."
 * "Keep going!"

Winning Boss Rush

 * "To the victor, the spoils!"
 * "Congratulations! Here's your well-deserved reward."
 * "Impressive work for a skinny one like you!"
 * "You triumphed over impossible odds, you can be proud of yourself."
 * "It's a victory for the prisonner! Who would have thought?!"

Losing Boss Rush

 * "What a dismal defeat. Do better."
 * "You can't win them all... but at least try!"
 * "This one was painful..."
 * "Better luck next time... but remember that luck isn't everything."
 * "Win or win not, there is no try."