Really cool game! The art style fit well and having your projectiles be mechs that you then need to return to the towers was an interesting twist. I did find at a couple of points the dice would land behind a tower and be pretty much impossible to click on , and it was a bit hard to keep track of the dice in general. Maybe brighter colours or an glow effect could have helped them to stand out. Some of the later waves felt like there were a bit too many enemies to reasonably deal with but I liked the difficulty level of the earlier waves.
Overall great job!