Completed the Megalopolis level on Hard difficulty

Completed the Frozenland level on Hard difficulty

Completed Canyon level on Hard difficulty

Completed Volcano level on Hard difficulty

Completed Alien Base level on Hard difficulty

Completed the Megalopolis level on Fury difficulty

Completed the Frozenland level on Fury difficulty

Completed Canyon level on Fury difficulty

Completed Volcano level on Fury difficulty

Completed Alien Base level on Fury difficulty

Received a score high enough to make the Leaderboard

Received a score high enough to make the top of the Leaderboard

Received a score of 2 million points or more

Received a score of 1.5 million points or more

Your Ranking was changed to "Warlord"

Your Ranking was changed to "God"

Purchased level 4 of the Shield, Gun, and Engine upgrades

Completed any level with a 65% accuracy rating or higher

Completed any level with a 75% accuracy rating or higher

Completed any level with a 85% accuracy rating or higher