I think you can manage. Depending on how you play the game. Run in with guns blazing wont get you anywhere. But if you pick em' off one by one and have a pretty good crit, then you could probably aim in some eye shots and what not and get by. This strategy will take time tho, and probably a fair amount of reloads
... Trick is to create some bottlenecks here and there and it can be done.
Edit:
Should also say that you'll need 9-10 action points to do this...