I don't know of any specific routines per se, but you can do lots of different exercises with dumbells-
Thrusters, cleans, snatches, dumbbell swings, shoulder presses, squats etc....
these are all good exercises, google them if you're unfamiliar. Mix these up with some runs and burpees and stuff and you'll be set...
For example, one workout might look like:
3 rounds of 20 thrusters w/ 45# dumbbells, run 400 meters
another:
25 cleans 25 burpees, 20 cleans 20 burpees, 15 cleans 15 burpees 10 cleans 10 burpees, 5 cleans 5 burpees....
Lots and lots of options...Doing this type of curcuit course training at a high intensity is the absolute best way to lose body fat and get in better shape.
Of course you need some heavy weights if you want to get strong :)
I'd look at building a pullup bar too, just use some steel pipe, and floor flanges and bolt to studs in the ceiling....