Changes

<li>Haste item: Increases character's movement speed by 150% for 10 seconds. (Keyboard mapping: Key 1)</li><li>Dexterity item: Allows player to pass through the obstacles more quickly for 10 seconds. (Keyboard mapping: Key 2)</li><li>Revert ceiling collapse: Makes the collapsed ceiling tiles rise back up into initial position for 20 seconds. (Keyboard mapping: Key 3)</li><li>Stop ceiling collapse: Stops ceiling collapse for 20 seconds. (Keyboard mapping: Key 4)</li>