[quote name='sendme']Have yet to go online so all I have been doing is challenge tower and story mode. I'm at the tag match with Liu Kang and Raiden. I'm having issues due to the health regenerating. Any tips? I'm thinking about buying past the ones that are to hard for me to get in a few tries. However I would like the trophy. So I guess i have to do them for that. I'm also wondering can you go back and beat just the ones you bought to get past and then get the trophy?[/QUOTE]
anytime someone has regen health, you just gotta be aggressive offensively. as for skipping, you can skip challenges and still get the costume and the trophy for the costume, but you must complete all 300 for the tower trophy. so you can skip them, but you must go back and beat them so you might as well just not skip. the more you die, the easier the AI becomes for that challenge (case in point, in #300 the first 5 times, you gain no health back between fights, but after awhile you start to to make it easier), so just keep retrying and eventually youll get it.