Have more than 10 game over
Start all 3 games
Start a MP game
Complete a lvl without taking a hit (DD1)
Use the travelator in stage 2 (DD2)
Use all the weapons of the game (DD1)
Beat the Terminator Boss in 2nd stage (DD2)
Make 100 hurricane kicks (DD2)
Complete DD1 Story mode
Make a 50 000 pts score (DD1)
Complete DD2 Story mode
Complete DD3 Story mode
Complete DD2 in Arcade and expert mode
Complete DD1 in Arcade and expert mode
Complete DD3 in Arcade and expert mode