Hello! thanks for checking ny game out! Ive rated yours, i just forgot to leave a feedback at the time, anyways for your questions :
Bugs : All your findings are mostly browser and might be hardware/software related issues (unless you played the pc version which i didnt know any similar or related bugs for that version.)
1. there isnt much optimization, as the game is already setup to run nice on mid-to-low end devices. (noticeable by the low resolution graphics)
2. I used Godot! I made the graphics with Krita and the audio using sfx plugins and a music track on youtube.
3. Wasnt really challenging tbh, the only problem is lacking free time since i was on the middle of college prep and exam. The only thing i didnt manage to do was add random variety of the floor designs of the arena.
4. I kinda like the style of long Anime Names, With the story itself (while absent in this version lol) is just like those fantasy dungeon animes.
5. I had passion of creating things for people to play with from young age, got introduced to gamedev in primary school and self taught myself until now which i just got into college.