speedrun

Short definition from Wiktionary

Noun

1. 1
   A playthrough of a computer or video game in which the whole game or a select part of it, such as a single level, is played with the intent of completing it as quickly as possible, optionally with certain prerequisites.

Verb

1. 1
   To perform or create a speedrun.
2. 2
   To do something or undergo some process as quickly as possible.