The TAC combos that I generally use during matches are as follows ( with these I worked to find a balance between optimized for damage / meter, and consistency for my level of execution )
For up TAC - M ( 2 hit ), M ( 2 hit ), Fd. H, ADDF, M ( 1 hit ), Fly, M ( 2 hit ) M ( 2 hit ) x3, H, M ( 1 hit ) M ( 1 hit ), Plasma Beam L, M ( 2 hit ), Plasma Beam L, M ( 2 hit, or M 1 hit x2 ) Molecular Shield xx Sphere Flame
For Side TAC - ADDF, Fly, M ( 2 hit ) M ( 2 hit ) x3, H, M ( 1 hit ) M ( 1 hit ), Plasma Beam L, M ( 2 hit ), Plasma Beam L, M ( 2 hit, or M 1 hit x2 ) Molecular Shield xx Sphere Flame.
The timing for the end of the combo can FEEL a lot tighter than it is because you get really low to the ground, but its actually very easy. You can shorten it by just doing a 2 hit Medium into molecular shield after the first plasma beam.
For down TAC its what I listed earlier - L, L, ADF, L, M (1 hit ), Fly, L, L, ADU, L, L, ADF, L, M ( 2 hit ), H, M ( 1 hit ), M ( 1 hit ), L Plasma, M M molecular shield into Sphere flame.
A slightly easier version for down TAC that I did originally was L, L, ADF, L, M ( 1 hit ), Fly, L, M ( 1 hit ), ADU, L, M ( 2 hit ), ADF, L, M ( 2 hit ), H, into the normal M M plasma beam staircase followup
There also version for side and up tac’s that includes lots of lights, which do more damage during the flight portion of the combos but require more effort for a fairly insignificant reward ( 10-20kish damage depending on the combo ).
The thing that makes the tac combos so amazing is that you can add an element of freestyling to each combo, if you see that the character is either too high above doom for the plasma beam followups to work properly, or conversely too low, you can add or subtract lights during the flight portion of the combo to adjust their height, as well as adding delays between mediums. You want to make sure the character gets juggled so you get 3 or more hits from the H in order for them to get hit twice by the plasma beam.
For example if a character is getting juggled too low, you can do things like M ( 2 hit ) x2, ADF, Light, M ( 2 hit ) x2, ADF, M ( 2 hit )x H. You can either replace medium’s with lights or find ways to just add them in, doing it with the generic 6 medium m&m’s gives you a lot of leeway to mess with.
Sorry if this was incoherent just typing it out on the fly ( ha! )