I am having the same issue. Purchased Towerfall Ascension with the Bundle for Ukraine and after installing it, the game will not launch. I click launch but nothing happens. If I go and open the TowerFall.exe file, same thing happens. Can't figure out what's going on. Other games from the bundle have worked fine so far.
Edit: I happened to have the game on Steam and compared the two folders. I noticed that there were quite a few files missing from the Bundle that were present in the Steam folder. I copied the missing files over and now it's suddenly working.