Amazing game. love the mechanics and the different gear that you can buy in the shop, i like the new item that gives you more mana regen.
I do have some suggestions/fixes that could be made. If i remember correctly you made it in unity, one problem/bug that can be fixed easily is being stuck in a wall or fence, if you add an invisiable item/ invisible wall with a tag like wall check then you add in the script for the player to check if it is standing inside wall check then "while true" x position + or - until it is outside the wall.
Another suggesting is to make a map where you can change the model/texture of the armour so you can have your preffered armour looks withe the stats you want.
Could be done by making the stat points and texture 2 different objects and make it so one is stat points and one is the textures, and in the transmog you can change the texture object to another texture object
Another suggestion is when after you finish the normal 15 waves you can make it so you can ascend/prestige, you lose all levels and all armour but you can remove like 2 bad effects or make them become less bad, you can also permanently add a modifier to exp. Like you can increase it by like 10-20% in script it would look kinda like this exp= exp × 1.1 or exp= exp×1.2. In the prestige you can also for example permanently add like plus 1 stat point or plus 2 to all damage.
Another fun thing to do is to enable a mode that makes all stat points of armor randomized. That is all from me will write more suggestions/help if you ask for more or i find more suggestions to add