Well that was surprisingly good! People will, as I just did, judge you for that default blue background. Always change the background color. That blue is a dead giveaway that you're new to Unity. And it's a shame no one else has played your game yet because it's hilarious and pretty challenging while still being fair.
The bits where you had to jump up multiple platforms that were directly above each other and jumping off Matt were pretty fun. The last level especially was really well designed. I must admit Matt is a little unpredictable and unfair sometimes, but the rest of the level seems to have been very concisely designed with every jump perfectly possible but just barely so.
GOD mode was a nice addition though I didn't beat it.
As for the humor, I can see some influence from Portal. I think *DOOR SLAM* was my favorite line, but mostly because it was unexpected.[Sorry everyone reading this before playing]
Overall, you have made a very nice game, and I hope other people play it.
Unity Note: You can fix the fuzzy text by setting the "Font Size" to something like 60, then just change "Character Size" to actually scale the text.