Well, I don't have a video, but here it goes: on Nexus, as a human in the alien base, instead of going up the pipe you can climb on the box nearby and shoot the eggs from there. You can use the sloped wall near the box to get on it. It's quite easy to do because you don't fall off the slope so it doesn't take much skill. Just jump on it and get on the box. The actual step to the box requires a bit of finesse but it's not hard. Don't use boost, just regular walk.
Also, on Karith, in order to get on the pipe and then into the vent that leads to the platform; in the video above we saw him using the sloped rail to get on the pipe. It's actually much easier to get up to the last level and use the horizontal rail there. Climb on the rail between the pole towards the pipe and the middle one. Run at the wall using boost. The last pole shoots you up and it helps if you crouch on landing. Do not jump, let the pole give you the bump up.
