| Achievement | How to unlock
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|---|
| Bad For Your Health | Complete challenge 1-3.
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| Battle Blimps | Complete the forth stage.
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| Beat That Timer | Complete challenge 1-2.
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| Bridge Over The River Doom | Complete challenge 2-5.
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| Bullet Hell | Complete challenge 4-5.
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| Collapsing Path | Complete challenge 2-2.
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| Contra Style | Complete challenge 1-4.
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| Death Trap | Complete challenge 5-3.
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| Die Hard | Complete stage 4 under HARDCORE mode.
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| Don't Hit Your Head | Complete challenge 2-3.
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| Fire Gauntlet | Complete challenge 3-1.
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| Fire Walker | Complete challenge 3-2.
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| Flying Gauntlet | Complete challenge 4-1.
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| Getting Started | Complete challenge 1-1.
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| Grounded Flight | Complete challenge 4-3.
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| Hard As Nails | Complete stage 1 under HARDCORE mode.
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| Hard On | Complete stage 3 under HARDCORE mode.
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| I'm So Hard | Complete stage 5 under HARDCORE mode.
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| Jungle Fever | Complete the second stage.
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| Jungle Gauntlet | Complete challenge 2-1.
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| Laser Bombardment | Complete challenge 5-4.
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| Limited Flight | Complete challenge 1-5.
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| Mother Brain | Complete the final stage.
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| Platform Peril | Complete challenge 4-2.
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| Pushed For Time | Complete challenge 3-3.
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| Robot Cop | Complete the third stage.
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| Rolling Around | Complete challenge 3-4.
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| Space Race | Complete the fifth stage.
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| Spike 'N' Speed | Complete challenge 5-2.
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| Spike Gauntlet | Complete challenge 5-1.
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| Super Hard | Complete stage 2 under HARDCORE mode.
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| The Beginning | Complete the first stage.
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| The Final Challenge | Complete challenge 5-5.
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| Time Flies | Complete challenge 4-4.
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| Time To Race | Complete challenge 2-4.
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| TOTALLY HARDCORE! | Complete the game under HARDCORE mode.
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| When Robots Attack | Complete challenge 3-5.
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