How to do the challenge in 2-3 Sheer Heart Attack

How to do the challenge for 2-3 sheer heart attack in ultrakill. please don't make fun of me for making a normal guide and not like HOW TO JUMP or something like that.

Introduction

To do the challenge in 2-3, you have to complete the level without touching water. And yes, this means ANY water, so avoid every body of water in the level. The exit is blocked off by a waterfall, but fortunately this can be removed by hitting 3 boxes. So... that's what this guide's for.
On the left is one of the two exits for the level. On the right is one of the 3 boxes that needs to be destroyed.

Bridge power box (first one)

This box is under the bridge in the room after the hall from the lobby.
This is what the bridge looks like. On the top end of the bridge, under it, there is a small hole that you can slide through. It has a soul, and the first power box. Defeat the enemies, grab the skull, and leave.

This is what the hole looks like.

Red pedestal power box (second one)

You can do this one and the next in either order, but one of those green minibosses spawns when you come here a third time, so we're doing this one first.

This room has one red pedestal and a door. Next to the stairs, there's an inlet.
Go toward where you came through and you'll find a power box. Break it, and move on.
Note that you will not have a red skull at this time.

Grinder room power box (last one)

After you get the second one done, look straight ahead and you'll find a crack in the wall.
Break it with a rocket launcher or shotgun, being careful not to fall into the water in front of you.
It'll open up to this room, where you can get around this waterfall by groundpund-jumping along the left side. The route I took around is highlighted by the gasoline on the ground here.
It'll open up into a large room with grinders underneath. Before leaving, you have to kill all of the enemies here, so do that. Left of where you came through, near the ceiling, there's another inlet. I'm looking straight at it here.

Walljump up here to find a soul and the final power box. It will say this when you've broken all three:

Continue ahead. You'll find yourself going through the same room you broke the first powerbox in. If you reach the lobby, go back. Jump down from the bridge, and you'll find the waterfall that was there before, is evaporated.

Jump through the slit, and you'll be at the secret exit of the level. Go down to finish the level (and unlock the secret one if you haven't already).

[person]

if you think this challenge is bad, get ready for 5-1 challenge

[8ball]

great guide but i couldnt complete the challenge because i dont know how to jump

[Streetcleaner]

I already used a youtube guide for the challenge. One of the worse challenges IMO. Cool guide.

[<#76428a>Sharkbilby]

This challenge really sucks.

Nice guide!