Soldner -X 2: Final Prototype achievements

Collect all 15 secret keys in stage eight through ten

Clear challenge 'Stage Keys'

Clear challenge 'Speed Gunner'

Clear challenge 'Hellfire'

Clear challenge 'Rank Master'

Collect all 35 secret keys in stage one through seven

Clear challenge 'Score Collector 1'

Unlock at least seven specials

Clear challenge 'Profiler'

Unlock and successfully pass 12 or more challenges

Clear challenge 'Speed Collector'

Clear challenge 'Action Fan'