Hint: Just like the last chamberвЂ¦ you donвЂ™t need another Aerial Faith Plate, since you already have one in the present.Hint: There are portal-able surfaces on both of the ledges with the Thermal Discouragement Beam Emitters.DonвЂ™t worry, you have another one in the present. Hint: The future Aerial Faith Plate is disabled.Hint: Good news: normal portals arenвЂ™t affected by Time Portal Activation Grills.Now figure out what to do with the other three. Hint: Notice that there are four angled panels in this room.The two points being, the second Thermal Discouragement Beam Relay and the second Thermal Discouragement Beam Receptacle. Hint: A straight line can be formed from two points.Hint: There is a portal-able surface behind the first Thermal Discouragement Beam Relay.You must use them both to get to the Discouragement Redirection Cube. Hint: There are two Thermal Discouragement Beams.Hint: The Material Emancipation Grill should be a non-issue since you have time portals.Hint: This puzzle can be solved with just Thermal Discouragement Beams aligned along the basic cardinal directions (ie.Hint: Your portals in the future are necessary here.Good, otherwise you would not be able to solve this puzzle. Hint: Thermal Discouragement Beams travel through time portals.Hint: The only situation where you need to be holding the future cube is when you move it to the Heavy Duty Super Button that opens the exit.But maybe thereвЂ™s something else that needs a bit of good timing. This is completely redundant and has nothing to do with the puzzle. Hint: Look at the blue clock next to the button, which ticks down after you press it.Hint: After pressing the first two buttons, travel to the futureвЂ¦ then back again to get to the third button.So you need to be quick! WellвЂ¦ not really, if you have your portals in the right place. Hint: ThereвЂ™s not a portal-able surface on the ledge with the button, but you donвЂ™t need one there to travel between timelines easily.They give great indication on what you are supposed to do.

Hint: Not enough momentum? Using three portals instead of two may help in gaining some more.Hint: Use portals in the future to relocate yourself without moving portals in the present.Hint: Moving through a Material Emancipation Grill in the future does not affect your portals in the present.Hint: Find a way to use portals in the future that will allow you to use portals placed in a different location in the present.

Portal test chamber 3