Straightforward and fast-paced. The controls were responsive, and the full premise was easy to understand.
I like that the objectives are just line up one after another, and that there's a massive light indicator for the power sources - that helps keep the player moving ahead without worrying about passing the objective and having to backtrack.
Upon dropping the bomb, it would be nice to have your completion time indicated on screen as you wait out the timer. The bomb only exploding after the timer depleted initially confused me, but then I realised that's where the 20 second timer comes into play. I thought that this is a clever touch.