I liked the start animation of the game which made me laugh too. Really cool graphics and the choice of making the game render inside a Computer screen with Panini Projection looks immersive and great. I liked the variety of color and enviroment along the levels. I liked also the effort in creating different type of obstacles instead of relying over and over just on jumping. The character did a bit of bad contrast compared to the background. It seems like 2 different art styles are used one for the character and one for the enviroment but I suppose that's a desired effect because the Player is dragged inside the Computer. I didn't quite like the animations of the Player that looks like are done really fast but I suppose that's where the time limit kicked in. I didn't like the Camera following the Player with really low smoothness, almost like if it was snapping every step I was doing, you should wait for the Player to move a bit before moving the Camera to catch up next time. If not for those 2 details, the game looks really cool, very well done!
One last detail. I don't belive the game it's retro but it's just stylized.