Dark Megaman
To do this glitch go to the city and jump on the front of a police car. There's a chance a red car will be in front of you. Keep hitting it regardless of what it says. Once you destroy it Bonne bots will fall out. Shoot them if you want. Open the trunk and get the zenny from it. Then speak to the policeman. Once he finishes saying he didn't find it (say no if he askes do you have it) press A and you'll become Dark Megaman.
Easy Money
Go to Apple Market and kick the can into the bakery. The woman behind the counter will give you 1000 Zenny. Enter any shop and exit. The can will reappear. Repeat this as many times as needed. Note: This will still work when everyone leaves.
Go to the market just before the main city (the junk store is found here). At the south entrance/exit, you can find a small yellow can on the ground next to a garbage pail. Start kicking it until you put it behind the counter of the larger of the two bread stores. A "Nice shot! Bonus 1000 Zenny" message will appear, followed by Remember to recycle your empty cans". You can exit and re-enter the market and repeat this as many times as needed.
Play the beast hunter game at the Studio to get 4000 Zenny for completing grade A. Repeat this as many times as needed.
Once you have destroyed the Bruno robot in Old City, go in the gate down to the Main Gate. Destroy the fire breathing dog. Collect the Zenny with the Vacuum Arm. Exit where you entered, and repeat as many times as needed. Before that though, there are "beehives" in the Cordon Ruins, where you get the Yellow Refractor. As long as you do not destroy the "hives" themselves, they unleash a unlimited number of flying enemies.
Use a high powered gun such as the Shinning Laser in places like the Underground City, Uptown, and Downtown to get more money than with the Buster Gun.
Infinite Zenny
This glitch can be executed after opening the Central Gate (the three doors in the Main Gate opened with the three Sub-City keys). Speak with Data there and say "I keep losing fights...", then "Yes" to his next question, and "No" to his next two questions. As a result, you can repeat this process infinitely, gaining 1,100 Zenny each time.
Note: If you say "Yes" to his third question - the second "No" question - you will earn a total of 56,100 Zenny, but can no longer get Zenny from Data.
Instant color change
After defeating Bruno go to the flutter turn on the tv and it will say that there was a bank robbery. Go to downtown and you'll see a red car coming shoot it in the trunk until it blows up, then a suitcase will fly out of it go pick it up and DON'T talk to the detective instead walk to the south door and it will ask if you wanna keep the money say yes and you'll get 200,000 zenny plus you'll instantly change to a black megaman.
Start with Jet Skates and Buster Max
Successfully complete the game under the hard difficulty setting with a time less than 8 hours. The Jet Skates and Buster Max will already be available at the start of the next new game.
Completing grade A...