Character Picking:
     To  make  one of your 3 selected characters appear first during a
match  press  and hold L at the versus screen for the 2nd character or
hold R for the 3rd character.

New Costumes:
     After  highlighting  a  character  on the character select screen
press Y or A.

Get points without playing:
     Go  to  training  mode  and  select  your  characters. Instead of
fighting,  leave  your  dreamcast on overnight. Eventually, the points
will start going higher and higher after a few minutes.

Defeating Abyss:
     Use  Cable  to  fight Abyss. In his first form, block his attacks
and  then  press Y to shoot. Repeat until he dies. In his second form,
keep  away from him and press Y to shoot. Repeat till he dies. For his
last  form,  use  Cable's Hyper Viper. It takes off 90-95% of his life
since  you can do a 115-130 hit combo on him. Then finish him off with
any attacks of your choice.

Cheaper hidden characters:
     Exit  and  enter the shop screen several times and eventually the
price of the hidden characters will be lower.

Same character selection:
     To  select the same character three times in arcade mode you must
unlock everything in the shop and get your experience up to level 99.

Take away life easily!:
     Complete  the  game two times and get B.B. Hood and Juggernaught.
Then  pick  these  two  and  Cyclops.  For  assist types, "Ground" for
Juggernaught,  "Variety"  for B.B. Hood, and "Projectile" for Cyclops.
Build you hyper combo bar to at least three, and then do a team super.
(do this if you start to lose). If all of them connect, Cyclops should
do  a  "Mega  Optic  Blast", Juggernaught should do a "Head Crush" and
B.B.  Hood  should  do  "Cool  Hunting". It will take away 75%+ of the
opponent's life bar and will result in a 45+ hit. This is a Super Team
!

168 Hit Combo:
     Pick  Cable,  War  Machine and then Iron man, while building up a
level 3 hyper combo bar. Do the ultimate combo, and if the opponent is
in  the  correct  place  in  the stage, and not trying to block, it is
possible to get a 168 hit combo EVERY single time you try!

Easy Win:
     For  an  easy  and to get some quick points/cash, choose sentinel
for  your  first  character,  then  any  other  2.  When matches start
immediately  begin  to  use the following combo, rocket punch (forward
one)  and his mouth beam. Keep repeating this until the enemy is dead.
This is great because his mouth beam overpowers any other blast in the
game,  and  sentinel  can  take  a  lot  of damage. Also against small
characters like server-bot, use a crouching mouth beam followed by his
triple  crouching  leg  extension.  Don't use his hyper combos either,
they'll completely mess up the process. Since you were hardly or never
hit u get lots of points!