GT City Raid Act 4 is a boss-focused farm. Act 4 Normal is the Shanron reward route, with low drop odds on Normal difficulty. Treat it as a late farming target for a team that already clears raids more than once, not as the first place to grind resources.
Boss damage comes first. Raid stages punish teams that clear normal waves but stall on a high-health target. The main carry needs enough sustained damage to finish the boss before the run collapses. Traits, gear, stat rolls, and perks all matter because a small damage gap becomes expensive across repeated clears.
Support belongs around the carry. Support units can improve damage timing, slow pressure, buff the carry, or help the board reach a breakpoint. A raid team built only from expensive damage units can fail when the account lacks Yen timing or lane control. Economy and support slots matter when they let the best damage unit enter earlier or attack longer.
Tank or stall value matters when the boss crosses too quickly. If damage is close but the raid ends from pressure reaching the base, defensive value or survival can matter more than another late attacker. A tank that buys time for the carry can beat another expensive attacker that enters too late.
Check the reward screen before a long session. If GT City Raid Act 4 still shows the Shanron reward path, compare Normal or any alternate difficulty by completed clears, not only by reward text. A harder mode loses value when it turns too many attempts into failures.
Clear speed decides whether farming is worth the time. A slow clear can be fine for the first win, but a rare-drop farm needs repeatable timing. If the team barely clears, the carry, support, perks, gear, or stat rolls need more work first. Better clear speed turns the same drop chance into more attempts per session.
Shanron works as a late target. Shanron and Shanron Omega are high-value but expensive units, so a stable raid team comes before Act 4 farming. Newer accounts often get more progress from traits, perks, gear, Story, and material routes before farming a low-odds raid unit.