Hi, This is Dickard Cain, Rei's friend and the game you made is pretty good for how much time you spent on it.
Overall i had a very good time playing the game.
The map design was pretty good I liked how you had to make some decisions to go to dead ends to get altars to power up and kill the boss f aster, or just rush to the boss and see if you can kill it without many upgrades.
I really enjoyed the area where i hit blocks and they respawned very fast. It really added to the "Running out of space" Theme, especially with how you made the monsters and stuff go through walls and literally swarm you.
The gameplay was pretty good. I didn't really use the freeze skill very often once i figured out you could double jump... yes i'm aware it's in the instructions. Once i figured out the map, I ended up outrunning the mobs, but it got to a point where would start lagging (probably due to too many sprites from constant monster spawns) and i couldn't control my character well at all. The fire spawns need to be toned to be very low outside of a range from the character. The first time i got to the Pink boss, There were like too many fireballs just going back and forth on the spikes. Killing them with my ultimate solved most of my lag issues.
I also find the spikes to not be punishing enough. When i was killing the boss, I killed the fireballs, took the healing not caring about the spikes because it does peanuts for damage and ignored the little guns shooting at me becaus they also did peanuts. I ended up just having infinite health and soul power from the fireballs getting stuck in the lower level of the pink ball area.
I really liked that hidden alter somewhere. I didn't end up getting it because i was falling, but i like the fact that there are some things to explore.