Almost excellent, but for the flaws that many reviews have already listed.
You're a talented artist, but the programming and overall design mechanics are deeply flawed. In addition to the 'random job change' not being appropriately balanced, the game runs at an unforgivably low speed. A simple horizontal runner should definitely not suffer from the level of performance issues we see here, especially when the pacing is already quite slow for a game of this type.
Overall, this is a great effort. A little polish would make it fun to play, and an extra developer (programmer) would make it a classic.