Thanks for giving the game a go!! I'm currently working on a unique buildable mini-tower for each main tower and they'll all fit the kitchen theme, so generic turrets are going bye-bye.
That pause menu is gonna be redesigned with clickable buttons and cool looks and everything.
I'll keep the maintenance idea in mind!! I've been trying to brainstorm ideas to get the player to move around and do something actively in late game. There's concept I have where there's an enemy type only the player can destroy that pops up at random locations (they don't move) and the player has to destroy them before they can launch their long range attack at the Pantry. Still gotta actually prototype this to see if it's actually worth going for or not lol
For winning conditions, I wasn't sure yet what I wanted to go for. I thought it would be interesting if there was a campaign mode that offers various objectives per map (or alternative version of the same map), so stuff like reaching a certain round, survive for a specified amount of time, playing with modifications like harder enemies or reduced Metal income, etc. This all depends on if I decide to go for a full blown release or just keeping this as a little experiment, and I'm not sure yet.
So glad you enjoyed my game!! Glad to hear you liked it even if you're not familiar with TD games that's awesome to hear.