I love to find new glitches and tricks in games, to take shortcuts, make the game faster, glitch the game out, whatever. I've found 3 in Darkwing Duck, and 1 in Exile: WP. I'm curious what other things people have found, and a search of the forums came up empty. (Aside from one thread referenced by HercTNT).
I feel like this one might have been intentional, but it doesn't seem like the playtesters bothered to playtest, so who knows.
Exile: Wicked Phenomenon, by jumping and changing characters, then jumping right after you leave a menu, you can get an extra boost. This allows you to skip about 30% of the tower of lost souls, by jumping to the slightly too high platform. (I'll make a video when I get back there, in the Japanese version.)
Despite 40ish playthroughs of Dungeon Explorer, and 10ish of Neutopia 2, I have yet to find any useful tricks or shortcuts. In Dungeon Explorer, right after the worm, you can use an enemy to push the boulder out of the way, but it does you no good, as there are no staircases present until you beat the bosses.