The campiagn was a little fun , but there were some parts that were boring. Not to offend you. I didn;t find many bugs. There was no lag in the scenario. May I suggest you put some more action into the scenario.
It was a little to easy how about you make it a little harder. You could make it harder by putting down more enemies or raising the difficulty. Then it would be more of a challenge.
The objectives were clear to what you had to do. I did not see many triggers in your scenario how about you add a few more triggers. I saw a cool trigger when the rocks sank . That was a good trigger. The map design could be alot better.
Map Design: 1
The map was just three terrrains may I suggest you put more eye-candy and mix up the terrain. For example the water was just plain shallow. How about by the shallow you put some medium water then in the middle you could put some deep water. On your forest you could mix up the trees a little bit. If you do that Icould rate it higher.
I understood the objectives they were not wrong or disleading. The story was pretty good.
You could add a bit more detail if you wanted a five rating on the story instructions.
Additional Comments: Good job I hope you continue making scenarios. and if scenario making ain't your thing then maybe rm editing is.