i did t4 without any single caster btw

p1 : aoe all like usual

p2: MT soldier MT knight OT Soldier OT knight

if ur DPS is ok u can kill all before dread spawn

p3: feed spiders and all DPS dread til it dead

p4: MT take nearest rook and OT takes all remaining and AOE all while melee DPS kill rooks 1st

if ur DPS is ok u can kill all before dread spawn

p5: OT take soldier and knight & MT take dread DPS kill dread asap before p6 begin

p6: Mt gets dread & OT gets everything while feed spiders to dread DPS LB rook & kill it then adds like this knights > soldiers > last dread and voila

if u guys fast enough like my team u can down T4 before elevator AOE starts

the only change will occur with one caster is physical DPS will kill knights by that time the caster should have killed 1 soldier by that time then dps help with last soldier in P2 & p6