🥇 Challenge Master
Unlock and successfully pass 12 or more base challenges
🥈 Key Explorer
Collect all 35 secret keys in stage one through seven
🥈 Can't hide from me
Shoot down a rare enemy
🥈 King of unlockables
Unlock at least seven specials
🥈 Key Master
Collect all 15 secret keys in stage eight through ten
🥉 Ready for the junkyard
Complete the first stage ('Zeus Sector') at any difficulty level
🥉 Piece of rock
Complete the third stage ('Ethia Ruins') at any difficulty level
🥉 System liberated
Complete the fifth stage ('Turady Deep Sea') at any difficulty level
🥉 Not that difficult after all
Complete the seventh stage ('Van Krist Labs') at any difficulty level
🥉 Survivor
Clear challenge 'Survivor'
🥉 Collector
Clear challenge 'Collector'
🥉 Action Fan
Clear challenge 'Action Fan'
🥉 Chain Expert
Clear challenge 'Chain Expert'
🥉 Profiler
Clear challenge 'Profiler'
🥉 Rating Expert
Clear challenge 'Rating Expert'
🥉 Lucky Number 7
Collect an accumulated total of 77777 chain rings
🥉 Speed Gunner
Clear challenge 'Speed Gunner'
🥉 Stage Keys
Clear challenge 'Stage Keys'
🥉 Speed Collector
Clear challenge 'Speed Collector'
🥉 Rank Master
Clear challenge 'Rank Master'
🥉 Kill Collector
Clear challenge 'Kill Collector 1'
🥉 Score Collector
Clear challenge 'Score Collector 1'
🥉 Hellfire
Clear challenge 'Hellfire'
🥉 The Last Chapter
Complete the tenth stage ('Inner Core') at any difficulty level
🥉 No time to waste
Defeat the final boss in stage eight in under 115 seconds