Twilight Forest Tips & Strategy

Progress in order. The bosses are tuned as a ladder. Skipping ahead means facing enemies you cannot yet hurt or survive, and sealed regions that will not open.
Craft a Magic Map immediately. Knowing where the next structure is saves hours of wandering under the dark canopy.
Light your base. Twilight is permanent, so mobs spawn freely. Fence and light any camp you build near your portal.
Save your trophies. Some late structures only unlock when you present boss trophies, so never throw them away.
Bring a Charm of Keeping to bosses. Losing your gear deep in the dimension is punishing; the charm keeps your inventory if you fall.
Upgrade materials as you go. Match your armor tier to the region: ironwood and naga scale for early forests, fiery and knightmetal for the towers, arctic armor for the frozen palace.