Have sunk a few sessions into this now and there is for sure some enjoyment to be had. When you get into a good rhythm you can smash through the levels pretty quickly and when you string together a whole bunch of enemies it feels pretty rewarding. This is definitely one of those games for 'toilet time' or any equivalent short length of time somewhere, as the style of play is pretty quickly over. I can't imagine sitting down especially to play this title, or focusing on levelling up anymore than one of the heroes. While it was fun briefly to level up one of the heroes, I very quickly realised that this is best played as an arcade style game seeing how far you can make it through the levels. Definitely worth downloading and having a short play on as it is a free title, with non-obtrusive in-game adverts. Nothing out of the ordinary but a fun little time-waster that doesn't take itself too seriously or go too heavy on the adverts.