@jamesdcaroll You can. All you have to do is go to browse. The first set of arrows are for earned or unearned badges. The second set of arrows is for difficulty. The third set of arrows are for type of game. You can adjust these to fit your needs.
Some tips to get the hard badge:
Don't be afraid to use your special ability thing but don't waste it either.
Something I did alot was get the impression that if enemies touched you shooting aimer you would lose health, but you don't.
Try to use the slow motion only when there seems no way out.