Hello again ^_^
I played your game again and it has a nicer feeling, so it is definitely better than before :) . I even tried to challenge myself by never buy any health upgrades and I made it all the way to level 36, before the purple killed me with one hit (does the purple do 20 damage, or did I receive two 10 damages in succession?)... anyways, let us ignore these details and focus on what is important! this game needs sounds effects as a priority (killing slime, slime preparing to attack, slime attack, throwing spear, retrieving spears...etc) all these things feel very empty without any sound effect. Also, maybe you should reduce hp from 20 to 15, so that people feel that upgrading hp is important. A second minor, but annoying, issue, is that the indicator for throwing the spear does not get longer when you upgrade the range. Also, you should try to have a different map (maybe have 3 levels and just use them as 1,1,2,2,3,1,1,2,2,3... or 1,1,1,1,1,2,2,2,2,2,3,3,3,3,3,1,1,1,1,1...) this way you can still have infinite levels without creating many maps