Hardcore is a mode in which all indicators of enemies are multiplied by 2.
In this mode, the change in damage of enemy units is especially noticeable.Also increase their health and maneuverability.

Your main task is to determine what goal to destroy at the beginning.
At that time, you should already know how to effectively and quickly destroy enemies.
You need to know the trajectory of the flight of an enemy ship. If he moves straight at you but you are unsure that you can destroy him before he reaches you, then use air-to-air missiles.
The biggest mistake in this mode is an attempt to catch up with the enemy ship. This mode requires you to deliberate action. If you see that the ship is far away from you, do not focus on it. Try to destroy the ships that fly at you or those that are near you.
Also do not forget, if the enemy is far away, shoot a little ahead of him to increase the chances of hitting the enemy.

Missions:
1.Easy
2.Easy
3.Easy
4.Easy
5. Medium
6. Medium
7.Easy
8.Hard * *
9.Easy
10. Medium
11.Medium
12.Medium
13.Easy
14.Medium
15.Hard * * *
16.Easy
17.Easy
18.Medium
19.Easy
20.Hard * *
21.Medium
A little about 15 missions.
In my opinion, this is the most difficult mission, and it is here that you must know which ships you must destroy in order to save the delegation.
In general, the most complex missions are missions with a delegation.

Good luck