First, goto Dr. Light's lab and buy a Mystery Tank.

Then goto Acid Man's stage and shoot the first spider twice with the Mega Buster. This will cause it to spawn six mini-spider bots.

Now, open the menu and select the Mystery Tank and all eight of the spiders to transform into 1-ups.

You can do this as many times as you like.

Beat the game, then go to the shop and buy the Awakening Chip.

This will give you unlimited weapon energy.

First, goto Dr. Light's lab and buy a Mystery Tank.

Then goto Acid Man's stage and shoot the first spider twice with the Mega Buster. This will cause it to spawn six mini-spider bots.

Now, open the menu and select the Mystery Tank and all eight of the spiders to transform into 1-ups.

You can do this as many times as you like.

Beat the game, then go to the shop and buy the Awakening Chip.

This will give you unlimited weapon energy.

First, goto Dr. Light's lab and buy a Mystery Tank.

Then goto Acid Man's stage and shoot the first spider twice with the Mega Buster. This will cause it to spawn six mini-spider bots.

Now, open the menu and select the Mystery Tank and all eight of the spiders to transform into 1-ups.

You can do this as many times as you like.

Beat the game, then go to the shop and buy the Awakening Chip.

This will give you unlimited weapon energy.

First, goto Dr. Light's lab and buy a Mystery Tank.

Then goto Acid Man's stage and shoot the first spider twice with the Mega Buster. This will cause it to spawn six mini-spider bots.

Now, open the menu and select the Mystery Tank and all eight of the spiders to transform into 1-ups.

You can do this as many times as you like.

Beat the game, then go to the shop and buy the Awakening Chip.

This will give you unlimited weapon energy.