Are there hotkeys for each action?
Yes, one can use a (attack), m (move), s (special ability), enter (end turn), esc (menu).

How many points do i need to win a game?
100 Score.

Why do the action points increase after each action of a certain unit?
To make the game more strategic, we added a fatigue system. Each action of a specific creature will get more expensive. This resets after each round.