In the game, the character performs consecutive strikes on a diagonal, using this sequence, you can easily perform different combos.
The mod replaces some combinations with its own, but some standard ones will work with the mod.
In the mod, combinations of strikes with a long and short sword were replaced.

New Combinations (Longsword):
*** three strikes
1. We put the sword on the right-top and make three consecutive blows.
2. We put the sword on the left-bottom and make three consecutive blows.
3. We put the sword on the left-top and make three consecutive blows.
4. We put the sword on right-bottom  and make three consecutive blows.
**** four strikes
5. We put the sword on the left-down  and make two consecutive blows and two stab blows (center).
6. We put the sword on the right-down  and make two consecutive blows and two stab blows (center).

New combinations (short sword without shield):
*** three strikes
1. We put the sword on the right-top and make three consecutive blows.
2. We put the sword on the left-bottom and make three consecutive blows.
3. We put the sword on the left-top and make three consecutive blows. 
4. We put the sword on right-bottom  and make three consecutive blows.

New combinations (axe): ver. 1.2
*** three strikes
1. We put the axe on the right-top and make three consecutive blows.
2. We put the axe on the left-bottom and make three consecutive blows.
3. We put the axe on the left-top and make three consecutive blows.

New combinations (mace): ver. 1.2
*** three strikes
1. We put the mace on the right-top and make three consecutive blows.
2. We put the mace on the left-bottom and make three consecutive blows.
3. We put the mace on the left-top and make three consecutive blows.

Once again for clarity!
Choose one of four directions:
1. Top-left.
2. Top-right.
3. Bottom-left.
4. Bottom-right.
And strike three times without changing direction, just LMB three times.
For four strike combinations, choose the lowest position of the sword and deliver two strikes and two stab blows (2x LMB + 2x RMB).

It's important to know!!!
Having an idea of the diagonal sequence of blows, it will be easier for you to perform standard combinations, since they do not require frequent changes in direction from the player, the character himself performs the necessary movements.
Now you know and can choose how to play!