Criticality

1.21 gigawatts!

Earn 1.21 billion xp in a single run

Power Overwhelming

Unlock all skills in the upgrade tree

Phone Home

Criticality Starts Here

Reach level 75

Oppenheimer

Reach level 150

I Am Become Death

Reach level 300

Looper

Prestige 5 times

Groundhog Day

Prestige 10 times

Back to the Future

Prestige 15 times

Fastest Man-Made Object

Reach 0.00064c

Evenly Matched

Reach 0.01c

Make it so

Go faster than light

Braincicle

Complete level 3

Rebuilt

Complete level 4

CCCCombo

Get 1000 atom chain reaction with 1 Click

Normal

Reach rank 2 on Nuclear Propulsion with no special atoms

Raiden

Do a 12 jump chain lightning strike

Prompt Criticality

Rank up within 20 seconds of a fresh prestige

Enrichment

Remove 238 non-fissile atoms

Total Internal Reflection

Bounce a single neutron off the walls 3 times

Clutch

Rank up after time is over with 0 shots left

Ima Firin Mah Lazer

Reach rank 4 in Infiltration with only gamma ray atoms

Warp 10

Buy 100 of each rocket lab upgrades

A Thousand Worlds

Complete Galactic Expansion and view the other endings