How would i go about making a metroidvania type game?

Hi there i’ve been looking into making a sidescrolling metroidvania for sometime now are there any tutorials for this kind of thing cause i’ve only been able to find one on YouTube but it wasn’t in English nor was it quite what i was looking for… Any help would be most appreciated…

those are pixel art platformers. you can start here:
https://unity3d.com/de/learn/tutorials/topics/2d-game-creation/creating-basic-platformer-game

and here:

this is from the 2D roguelike tutorial:
https://unity3d.com/de/learn/tutorials/s/2d-roguelike-tutorial