One comment I do want to mention is that there is a sound effect when time runs out, but not when you win. For events like this, if you're strapped for time, I would focus on embellishing the path that most players will likely take (in this case, victory).
As for the glitchiness, I think that some deserve to be fixed, but others might be better cultivated. Game Title: Lost Levels (http://www.glorioustrainwrecks.com/node/2268) for example, was inspired by a glitch. In this case, the nature of the glitch seems to be that blocks change properties based on the direction that you approach them from (the right side of blocks can be climbed, the left side can sometimes be passed through). When phrased like that, that sounds more like a mechanic that you'd build a game around than something you'd want to eliminate.