At the main menu, select "Snapshots", "Snapshot Playlists", and go to "Blast Score". Then, successfully complete all five snapshots without losing a life to get the "1-Upmanship" achievement.

1. Hold A to fire, and slowly move back and forth occasionally moving your aim up to hit additional enemies.

2. In Battletoads, go up to enemies, and tap B to hit and kill them. Kill three enemies to reach the goal.

3. In Cobra Triangle, it can be a little tricky. You will automatically be moved forward due to water current and you must hit the enemies on the side of the shore. Each enemy is worth 100 points, but every consecutive enemy is worth an extra 50. Thus, the key is kill a lot of enemies in a row without missing.

4. In Snake Rattle N Roll, grab the first "Y" pieces, then grab the black circle with your tongue. The only thing you have to worry about is hitting an enemy or getting killed by the crocodile in the water.

5. From the start, go to the right hand side until you end up in a room where two skeletons spawn. Alternate between them, and kill them as they keep respawning. Be as quick as possible, and kill 13 skeletons to reach the goal score.