Wow, this game is truly amazing! As someone who loves FPS games like Doom, this little gem hits all the right notes. It's a charming and bizarre experience with the chaos and concept of fighting EVIL letters, which adds to its uniqueness!
The combo system in the game is a banger, and the gradual gun upgrades provide a simple yet enjoyable progression. The mechanics and chaos in the gameplay are simply mind-blowing. And let's talk about the music—it's absolutely perfect! It sets the tone and enhances the overall experience.
I must mention that the AI is nearly perfect, except for "C" who tends to stand motionless at times, making them easy kills. However, apart from that minor issue, everything else about the AI is amazing. And to think this game was made in just three days? It's truly impressive!
If I had to be more critical, I would say that the map feels unfinished. It's evident that it's template stuff, and that takes away a bit from the overall experience. Additionally, I understand what you mean about the games theme, though imo it doesn't really fit "echos". However, this doesn't bother me much because, in terms of quality and creativity, this is undoubtedly one of the best entries. The fact that you managed to create multiple AI characters and implement various mechanics in just three days is commendable.
Overall, amazing work! I genuinely hope you continue working on this game after the voting period because I would happily pay for a full version. It has the potential to become something truly special. Keep up the great work!