Complete Level 1 - Dead City (Any Difficulty)
Complete Level 2 - Wasteland (Any Difficulty)
Complete Level 3 - Skynet Base (Any Difficulty)
Complete Level 4 - Time Chamber (Any Difficulty)
Complete Level 5 - City Streets (Any Difficulty)
Complete Level 6 - City Rooftops (Any Difficulty)
Complete Level 7 - Tech Noir Bar (Any Difficulty)
Complete Level 8 - Police Station (Any Difficulty)
Complete Level 9 - Cyberdyne Factory (Any Difficulty)
Complete Level 1 - Dead City on Super Difficulty
Complete Level 2 - Wasteland on Super Difficulty
Complete Level 3 - Skynet Base on Super Difficulty
Complete Level 4 - Time Chamber on Super Difficulty
Complete Level 5 - City Streets on Super Difficulty
Complete Level 6 - City Rooftops on Super Difficulty
Complete Level 7 - Tech Noir Bar on Super Difficulty
Complete Level 8 - Police Station on Super Difficulty
Complete Level 9 - Cyberdyne Factory on Super Difficulty
Complete Level 10 - Final Battle and finish the game on Any Difficulty
Complete Level 10 - Final Battle and finish the game on Normal Difficulty or higher
Complete Level 10 - Final Battle and finish the game on Hard Difficulty or higher
Complete Level 10 - Final Battle and finish the game on Super Difficulty
Complete Dead City without losing a life (Medium Difficulty or higher)
Complete Wasteland without losing a life (Medium Difficulty or higher)
Complete Skynet Base without losing a life (Medium Difficulty or higher)
Complete Time Chamber without losing a life (Medium Difficulty or higher)
Complete City Streets without losing a life (Medium Difficulty or higher)
Complete City Rooftops without losing a life (Medium Difficulty or higher)
Complete Tech Noir Bar without losing a life (Medium Difficulty or higher)
Complete Police Station without losing a life (Medium Difficulty or higher)
Complete Cyberdyne Factory without losing a life (Medium Difficulty or higher)
Complete Final Battle without losing a life (Medium Difficulty or higher)
Complete Dead City without using grenades (Medium Difficulty or higher)
Complete Wasteland without using grenades (Medium Difficulty or higher)
Complete Skynet Base without using grenades (Medium Difficulty or higher)
Complete Time Chamber without using grenades (Medium Difficulty or higher)
Complete City Streets without using grenades (Medium Difficulty or higher)
Complete City Rooftops without using grenades (Medium Difficulty or higher)
Complete Tech Noir Bar without using grenades (Medium Difficulty or higher)
Complete Police Station without using grenades (Medium Difficulty or higher)
Complete Cyberdyne Factory without using grenades (Medium Difficulty or higher)
Complete Final Battle without using grenades (Medium Difficulty or higher)
Collect all weapon upgrades in the 2029 levels
Collect all weapon upgrades in the 1984 levels
Complete the 2029 levels without picking up any weapon upgrades (Medium Difficulty or higher)
Complete the 1984 levels (except for Final Battle) without picking up any weapon upgrades (Medium Difficulty or higher)
Have 80 or more grenades in your inventory
Have 9 lives in your inventory
Finish any level with less than 10% of your health remaining (Medium Difficulty or Higher)
Earn 100,000 Points
Earn 250,000 Points
Earn 500,000 Points
Earn 1,000,000 Points