I had fun playing it, especially in the endgame when my spell speed was very fast and i had 2 or 3 bosses at once :D
Sadly had to reload because i accidentally clicked on the submission banner picture xD
At first i didnt understand the movement, but after finding out that i was faster with moving also with the mouse the movement felt a lot smoother.
The background sounds feel very fitting (but maybe a bit too loud) and i liked that the screen shakes when i got hit by enemies.
At first i stayed too much to close to the portal and wondered why not much enemies spawned, but after moving away more i found a lot more.
After a lot of buffs i had times when i got swarmed by enemies and times when i had to search for more again. I dont know how to explain it. It felt like the enemies spawn either too fast all of the sudden or too slow.
It felt a bit unrewarding to only get one coin for a boss, but i can understand that it would otherwise speed up upgrades to much.
I liked that it gave 50 coins already at the start to immedialy get some upgrades and see the different kinds :D
The upgrades buffs felt sorta too fast to get very powerful, but as a game jam entry it feels fitting to get powerful fast to see what the endgame is like
Overall a very fun game :D