"Wayted 2 is a hard platformer based on old flash troll games, whose goal was to create a hard experience utilising simple mechanics and gimmicks" perfectly describes the game's experience.
The overall controls and different diamonds and level design are pretty good and fun, but there are four main issues with the game, form me:
Art Direction - the game's missing a bit of polish and juice, both visually and in audio. I think the style could work, but needs a bit more effects to make everything stand out more.
Audio: Public domain music is fine to use, but the game would benefit from a tailored soundtrack with the same contrast (fast-paced gameplay vs a calm atmosphere). Also, the lack of sound design (player movement, death, interaction with teleports, and so on) is making the game a bit tedious in the long run.
Lack of feedback: the game's lacking a lot of feedback for the player (see the art and sound design issue) to understand what's happening, and to be rewarded when completing a level (a fanfare, an explosion, whatever, it does not have to be something overly spectacular).
Overall I enjoyed the game because of nostalgia and fondness for the genre, but it lacks a bit more polish to be a true gem.
Keep up the good work!