Alliance War Showcase SUPER SIMPLE guide
LEFT SIDE (easy path):
Team: 7* R3 Hulk, 7* R2 Titania, 6* R4 Magneto, 6* R4 Longshot
Venom: Easy solo with LS, just restart until he starts without an armour up then SP2
Kindred: Hulk smash, decay ignores all degen
Longshot: Titania SP3 after baiting his SP1, easy solo
Bishop: Hulk SP1 stun lock the entire fight
Gorr: Longshot SP2 completely destroys him
Zemo: Magneto shuts him down completely. Reparry and build to 40ish prowess then SP3
Mysterio: Titania won't gain power so just bait SP1 (decay ignores reflection) and heavy spam him in corner, use haymaker etc
RIGHT SIDE (harder path):
May as well pop on some boosts here (mainly for red skull and sassy)
Team: 7* R3 Hulk, 7* R2 Titania, 6* R5 Galan, 6* R4 Magneto
Venom: Easy galan solo
Kindred: Hulk smash
FAM: Magneto completely shuts him down. SP3, game over
Red skull: Use Galan and push Red skull to his SP2 so he doesn't trigger autoblock. Build to 999 harvest then SP2
Sassy: Most difficult fight. Use Titania and build to SP3 then heavy spam him in corner. Rinse and repeat until dead
Werewolf: Hulk smash
Mysterio: Use titania as before
BOSS:
Photon: Swap in zemo or mantis and watch them cook. She's stun immune so don't worry about parrying and use the usual rotations. Can be a bit annoying as she has a lot of health and high block pen and if you need to use a revive here then no worries. Would use boosts if you have some lying around.
Good Luck!