Painless

Restructuring existing code without changing its behavior

Meeting to reflect at end of a sprint

Presentation meeting at end of a sprint

A project management framework / methodology

Automatic degradation over time

List of development tasks for an interation

Common understanding of behavior in collaboration

A short knowledge sharing session

A project using Gherkin test specs (BDD) to drive all project stages

Measures to make necessary, interesting, motivating details known to every participant