jump 3 - You can just double it
jump 6 - the teleport above the glass is a bit high (you sometimes hit it when going at a steep angle)
- Might as well make the red ring a bit bigger so its easier to hit if you go too high coming out of the vert
- Have the teleport come off the black thing so you get teleported just by walking into it
jump 10 - really no point in having the teleport at the end of the level (after you fall down) because its really easy to avoid and if you hit it, it would have to be from a stupid mistake
jump 12 - lower the teleport entity because it leads to the annoying thing where if you go too fast and hit a teleport you go flying out of the entity right back into the trigger again
jump 14 - the double seems kinda tight. Maybe bring back the gray floor a bit and lower the water as well.
- also might as well make the gray floor func_brush to keep things uniform
jump 14-15 connector - just add a light before you fall down so you can see where you're going lol