It's just like the outbreak mission when it first came out. Or any exotic mission you just need to wait until videos are posted practice it.. Just remember there was a time when the doctrine dungeon was the hardest content but once you watched videos and you practice it became very easy. I do agree that when bungie makes content where it focuses on puzles it does become extremely boring and repetitive to a point where people just want to complete it once and to never come back...
If you have to rely on videos to complete the mission then it's not a game for you.
1. Electric door - if you open them and immediately step back there's enough time to escape in case you hear that crackling sound. Three runs and you will know which doors to take anyway.
2. Slide - the nodes are clearly visible. You just need to get close enough to destroy them.
3. The puzzle room - well, it's a simple puzzle. People have to look at the wall. If they have the attention span of a goldfish they can turn around and look at the consoles...