The game is fun! but i have some things i would like to givesuggestions about:
First, the enemies. Some types of enemies are just unoticable, i would suggest the having a red border to make them more noticable.
The cursor also suffers from the same problem and gets lost easily, i would suggest something more vibrant.
And lastly, please have it so if there is a large amount of XP in a certain area, either spawn less strong enemies or lower the spawn rate. I find it very hard to get to XP where i have killed lots of enemies, paired up with the first problem of unoticable enemies, i keep bumping into them by mistake.
And please make the UI more noticable by using contrasting color, diffrent from enemies & the map.