It is fun, though I could use a walkthrough.
Softlock: In Central on the right, near the elephant slide, there is a kid walking up and down. If you stand in the upmost spot of his loop, eventually he will walk there and close off your only way out.
If Frogger is not alive by the time you finish the Fallen Lictor and find the cruise tickets, the game gets stuck in a Game Over loop.
Those are my two only saves currently :(