First one is a major one to those running fresh file 100% or Unlimited mode. DO NOT push the X button right after dashing or you will crash the game. I've tweeted this to Inti Creates and it will be fixed in a future patch.

The next 3 videos are out of bound glitches

Getting Life Up in Area 5 via Out of Bounds might be the fastest way in Unlimited Mode 100% runs as you can skip the painful backtrack by save + reset warping.

how do you get stuck in the wall in the first place? something involving dashing in unlimited tank?

For the clipping glitch: Requires a 1 block gap between floor to ceiling and can only be done underwater because Jason can ascend by holding up. You have to be underneath a corner because, for some reason, Jason's eject jump allows him to go through the solid object.