Nice videos with lots of good tips to beginners.
However:
That speedbuilding on transit is not saving you any time if your previous buildable finishes before you place the next one. Get build binds (if you don't already have them) and *plan ahead* to do it significantly faster. Strafejumping can help a little too. Tho if you still can't place a buildable before the previous one finishes, it might be better to just stay alive.
Saw vs dretch: you need to move around more, standing still makes you extremely predictable. Also chase the dretch and try to not lose sight of him (don't let him go straight over you for example, when he is coming at you, step to the side).
In transit box room you wasted time going around the long way (and still took falling damage) when attacking with saw. You can walk off the boxes without taking fall damage, don't need to use jet there either.
Get used to reloading with the reload button and not by emptying your clip, and try to predict when the enemy is going to die so you can waste less ammo.
2nd Tremor game: building in the back hall is, and has always been, a bad idea.
The Niveus base wasn't "perfect": all (~4) eggs should be on ceiling at s2, no acids on ground, 2nd booster at top, and the barris at OM are usually not worth it since they cover less than half of the OM from humans already inside (tho they are much more useful against blocking grenades and saws). The backup egg should not be on the slope since that can easily be shot from below.
NEVER SURRENDER. Don't rush straight at the humans, and stop feeding. If they don't come in you don't have to attack them. It is possible to defeat a more organized team by getting some of your own team to work together as well. They are likely to make a mistake (or have 1+ newbie feeder on their team), you just need to find their weakness and exploit it.
