Triple P to practise (You will need it) - C to make checkpoints - R to go to your checkpoints - V to add water (so you can practise swimming parts) - B to remove the water - N to give yourself 400 air to practise swimming bits
This is a nerfed version of the original containing only Acts 1 to half of 3. Verification by @The_Storm_699: https://youtu.be/t0K_xTwnW2o