I love the space theme, with the astronaut character and alien enemies. All of the art is amazing but the background and animations caught my eye the most. The implementation of multiple levels made the game more challenging. Certain levels, such as the one with a narrow path covered in spikes, were especially difficult but fun nonetheless because I had to maneuver and time my player movement expertly. One suggestion I have is to add a limited number of lives to make it even more challenging. And once the player runs out of lives, they will restart at level 1.
I really like the animations; they are very catchy. I would suggest adding sound effects, maybe sounds of gunfire and getting hit by enemies. The title screen seems improperly scaled as some of the text is cut off, even when I enable full screen.
First thing I noticed is that your art is very detailed. It clearly takes place in a city. I love the animations, especially when the zombies hit the ground. The sound effects are also on point. I would suggest increasing the speed of the falling zombies as you progress.
The underground art was amazing and I really like the jumping sound effect. The implementation of the boost run was interesting and helped me complete certain levels. I also like that you added 2 options for movement controls: WASD and arrow keys, allowing players who have a preference to use the controls they want. I would suggest adding enemies as an additional obstacle so it would be more challenging. I would also suggest adding music, maybe ominous music to fit the cave environment.
I like that it has a portrait orientation. Your heavenly music choice was perfect because the character is ascending into the clouds. The jumping sound effect was also perfect. Showing the score encourages me to keep going as far as I can. I have actually spent 20 minutes trying to get to a score of 50+. One suggestion I have is to make the game more difficult the more you ascend. Maybe increase the speed of the moving rocks or decrease the size of the rocks.
