I think you are talking about 2 ingame achievements from Kingdom Rush there, right? =)
What you can do best is check either the Game Walkthroughs Forum or the Flash Games Forum for this mrmossy. These are the places you're likely to find an answer for your question. Good luck!
There is a level with a stream, just click on a fish when one jumps. Fredo is in a snow level with a lot of spiders, he is in a web sac over a cave, just click on him until he drops.
