The part where you have to activate a switch, this triggers 5 or 6 platforms that consecutively turn upward. At the end is a gate that raises. Below is some shallow water with a water monster.

I've gotten through this gate(way) a few times in the past. But, for whatever reason, it seems to be impossible now. I don't know how many times I've tried jumping through, or even walking through... But I keep falling into the water.

I just needed to wait a second or two before I jumped over to the first platform... Then I'd need to run the whole way. The momentum would be enough for me to go through the gate. Going immediately, or asap, would mean I'd have to wait at the end. By the time I could move through the gate - I wouldn't have enough forward momentum.

Version 1.4 release (18/06/15)
- Minor improvements to Grunt and Brute AI.
- Re-enabled the journal and hidden the inventory screen.
- Fixed a bug that could cause you to end up in the void if pressing buttons when the level resets.
- Changed the "Lives" tutorial and included the "retry" button.
- Disabled the "retry" button in the first two maps, before the updated tutorial.
- Added further gating to the ledge-boost tutorial area, to ensure the player learns to use it.
- Fixed a cosmetic mapping glitch in the Entrance Hall.
- Fixed a problem with the elevator lever in the Back Hall being re-usable.
- Lives lost at the start of the prison level no longer count against your score.

Version 1.3 release (13/06/15)
- Removed camera bob from gameplay and cutscenes.
- Added lever sounds as puzzle clues in various maps.
- Added colour-coding to the pipes as puzzle clues in various maps.
- Fixed a problem with re-breakable barrels, most notably in the refinery.
- Fixed a problem with saving during the scoreboard.
- Fixed a clipping problem when falling through the hole in the back hall.
- Disabled the inventory screen.
- Made some changes to the key binding screen.

Version 1.2 release (10/06/15)

Version 2.0 (21/06/15)

• You now have the option to skip a level if you die and retry more than 5 times.
  
• Fixed custom level support.
  
• Added a basic example custom level and template .expobj files.
  
• Fixed the starting gate in the first flooded cellar level.
  
• Fixed some of the breakable objects in the prison.
  
• Made a difficult jump in the cistern a little bit easier.

Version 1.4 release (18/06/15)

• Minor improvements to Grunt and Brute AI.
  
• Re-enabled the journal and hidden the inventory screen.
  
• Fixed a bug that could cause you to end up in the void if pressing buttons when the level resets.
  
• Changed the "Lives" tutorial and included the "retry" button.
  
• Disabled the "retry" button in the first two maps, before the updated tutorial.
  
• Added further gating to the ledge-boost tutorial area, to ensure the player learns to use it.
  
• Fixed a cosmetic mapping glitch in the Entrance Hall.
  
• Fixed a problem with the elevator lever in the Back Hall being re-usable.
  
• Lives lost at the start of the prison level no longer count against your score.

Version 1.3 release (13/06/15)

• Removed camera bob from gameplay and cutscenes.
  
• Added lever sounds as puzzle clues in various maps.
  
• Added colour-coding to the pipes as puzzle clues in various maps.
  
• Fixed a problem with re-breakable barrels, most notably in the refinery.
  
• Fixed a problem with saving during the scoreboard.
  
• Fixed a clipping problem when falling through the hole in the back hall.
  
• Disabled the inventory screen.
  
• Made some changes to the key binding screen.

Version 1.2 release (10/06/15)