thanks a lot mate 😀 I realy appreciate you playing! If i'd start again, I would swap the complete spawsystem and probably do level streaming to be able to load/unload enemies. Couldn't do it with the current 'quick' setup in an elegant way. I hope you found some of the upgrades?^^ you will need a ton of them to survive till the end 😀 its probably too hard right now, but I wanted go make it challenging. One future plan was an XP and levelsystem. So you can do progress beside picking up the Upgrades.
Feel free to suggest enemy types and potential upgrades 😀