I'm sorry if what I say about the game is a little harsh. I'll do my best to remain constructive.
This game is very simple. Possibly due to being in scratch, but nonetheless very simple. Walk to the right, press the spacebar a couple of times, get the item do the exact same going back. Or use S to warp back if you are feeling fancy at least one time. The music is ok, but the sound effects feel much too high pitched. The implementation of 30 levels feels absolutely barren as each can be completed the exact same way and they repeat. At least having just the actual unique levels to play though would be a bit better. The art, is ok as well. More detail in the pixel art would have gone a long way. Having the main character have a one color trench coat with just the buttons while his hair had easily 3 times the time spent in it feels like a ton of wasted potential.
If all of this was mainly due to the engine's crippling drawbacks, it might be best to try other more feasible engines in the future. It does work just fine however. The main issue is that after you play the first level, you've really played them all.
Still, its a game, you made it in a week, and probably learned quite a bit in the process. Just keep building on that and each project will become better and better. However I must really suggest at least trying other game engines.