The phrase "end boss" refers to the final and most challenging enemy or obstacle that a person must defeat or overcome in a video game, story or other challenge.
Sentences with «end boss»
This also goes for ending boss battles which you encounter at the end of the demo. (nonfictiongaming.com)
Will the game feature a traditional level - ending boss fight structure? (electronictheatre.co.uk)
Plus, there are no really rare weapons (excluding those received by defeating end bosses), so there just seems no point to any of it. (stevivor.com)