Alright nigga, I'm going to waste ten minutes writing this feedback up.
1) Make it much more obvious who's turn it is and show the remaining time for their turn. Don't use the fucking log for this. Highlight one of the player's boxes and add a proper timer display. Add a countdown until game over too, since you mention games time out at 10 minutes.
2) In general you're showing fuck all information in the UI. Add costs under monsters. Show how many out of the maximum you have summoned. Highlight when the player earns gold for a move or a kill.
3) Show the grid.
4) When you select a monster you should be able to see it's movement range and highlight enemy monsters it can attack.
5) Succubus is worthless while Demon is stupid strong.
6) Show tiles you can summon to when you click on a monster icon.
7) Add a health display for towers, since they seem to require multiple hits. (But I had a demon one shot a tower in one game?)
8) If you're going to have different damage types then put that information somewhere in game. Is a succubus attack physical? Is a slugg's explosion physical? These shouldn't be trial and error questions. In short: if you're going to have these types of mechanics you need tool tips or something so people can see the information in game. And run with it more. Make sluggs immune to magic or something, so you can threaten sorceresses dead zones, things like that.
10) You mentioned last thread it was meant to feel like chess but right now, against an opponent that knows how to play, you're just setting up a no man's land until you can get demons out. The game would benefit from having secondary objectives, like tiles you can capture for an income bonus or are required to summon certain monster types or increase a monster cap limit or whatever else you can dream up.
11) Fix the blurry text and images.
12) Add a chat so we can have some banter.