Nice TD game.
Really addictive.
If I can suggest what to fix:
1. There are some ways to make challenging levels easier and not so interesting to save all data cores, like run couple levels forward with moderate result, get new tech and return back for "excellent result".
2. Sentry cannons are too powerful when splash, fork and linker are applied to them. And even more powerful if there are 3-4 such cannons stay together.
Probably it could be fixed with making programs immune to stun for 1 second or even more, disallow use of fork and linker together with Sentry also could work.
Lvl 25 becomes peace of cake with pack of Sentries. As Axon spawns SU all the time Sentries fire a BUNCH of splashing rounds. Actually my Axon died before he reached cores even without using scripts.
3. Slicer cannons are too powerful when 2xfork, linker and slow applied. Especially when map has long and straight paths.
Also sometimes one Slicer with such set of upgrades at the center of a map is enough to control all activity.