Sometimes, ranged units cannot attack enemy units - it just selects instead of attacking. The plus sign and red attack icon are still there. Can be fixed by moving, then undoing, then trying to attack again.
/bug Takes quite a few page refreshes for it to even load. Sometimes shows a white screen, sometimes the menu background only. Chrome 1.0.154.65 Flash WIN 10,0,12,36. XP SP 3.
As much as I like room escape games, this one gets only two stars. Don't put the walkthrough right there in the game screen, and isn't the music too scary for just being grounded? :]