Hey there Kaito!
Thanks for playing the game! I was actually afraid that the game would be too hard haha - maybe you're a pro at these strategy games. Initial playtesters always lost but I think after the improved tutorial, maybe I should've made it a little more difficult. (I assume you're playing on the default bomb and not the Handicap bomb that reduces heat to a trivial level).
I'm still looking for more feedback so I will monitor the difficulty and increase it post jam as I want to add more content to it :)