Inventory says I have 5/150, there's no all items button but it seems like the default view is all items and when i click through the categories independently i only show 4 items on cosmetic tab. What's the 5th?
@Melanie:
C6H8O7 is Citric Acid. H20 is obvoius.
Mixing Citric Acid with water would only create a weekend solution. Citric acid is already a weak organic acid (used as a preservative in carbonated drinks), so I'm not sure how it'd dissolve steel. But nevermind that, fun game. Damn the observation room and spikes though, wasted so much time for nothing.
Rofl, i was thinking of the wrong level. After you set up your infinite loop and reach top speed, shoot a portal at the bottom right. You'll pop up fast and high, allowing you to clear the block.
Level 9/Infinite loops:
An infinite loop is where the portals are lined up so that your character falls indefinitely without touching the ground. This allows you to pickup speed due to the uninterrupted acceleration of gravity.
For level nine, you need to shoot a portal at the top area, stand directly below it, and put a portal below you. You should start falling in a straight line. Don't use your arrow keys at all here. Just start shooting for the blank spot on the far right and click quickly. As you pass the location, you'll eventually hit the other wall with the portal and fall through it, reaching the other side. Most levels from here on out use this concept and other physics basics.
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