|If you have completed the game on Contender you will not have too much trouble moving up to Champion. You will just need block and dodge more, while choosing your punches wisely or the counters can cause some damage.|
You will need to progress through career, defeating all but a few boxers put in front of you. Although I would advise not skipping any fights. The more fights you do the more training sessions will be made available to improve your stats. I would also avoid any media events, these decrease your boxing stats and don't serve any real purpose.
Once you have become champion, you will have to defend your belt seven or eight times with the final defence against Bonami. He is quite tall, fast and can switch from orthodox to southpaw. You shouldn't have to alter your fighting style too much, just be careful of his punches as they can cause lots damage.
Must be completed on Champion difficulty