You can also choose to activate a challenge before using your portal. Completing a challenge will earn you a permanent reward. You can abandon or view an active challenge at any time by clicking the "View Perks" button.If you abandon this challenge, the portal will become unstable and the world will restart (you'll keep permanent bonuses like helium)
Achievements You are dealing % extra damage.
You can earn achievements by doing stuff. Each achievement will boost the amount of damage your Trimps can deal, and later achievements grant a larger bonus. You can learn more about an achievement by hovering your mouse over it.
Heirlooms are powerful items that can drop with a variety of bonuses and a variety of rarities. You will earn one Heirloom every time a Void Map is completed, and you have a better chance to get higher rarities if you complete the Void Map at higher zones. Once you have an Heirloom, you can click the icon below to select it.
Once you've selected an Heirloom, you can see all of its stats on the right side of this screen. You can click a stat to upgrade or replace it. The currency to upgrade and replace stats, Nullifium, or Nu, can only be gathered by recycling an Heirloom. You can also click on the Heirloom's name on this menu to rename it.
You can only carry a few Heirlooms (other than the two you have equipped) back through the Portal with you when you use it. Any Heirlooms in the "Temporary" section will be recycled for Nullifium on portal.