• vimanāḥ — disheartened
  vi + manas — mind-emptied, dejected. The exact word the Bhāgavatam later uses for the gopīs after Kṛṣṇa leaves Vraja (10.39). Akrūra is the first to taste vipralambha at Mathurā's threshold; the gopīs will inherit the same word.
• karma — his activities
  Accusative of karman. Akrūra reports his 'work' to Kaṁsa — but his real karma was darśana of Kṛṣṇa in the Yamunā. The verse runs on this irony: official duty discharged, secret reward already received.
• kaṁsāya — to Kaṁsa
  Dative of Kaṁsa, the asuric king of Mathurā. In the Bhāgavatam's economy of names, Kaṁsa is the prototypical kṛṣṇa-dveṣī — the one who hates Bhagavān. His name's appearance in this verse marks the chapter's pivot toward the next.
• gṛham — to his home
  Accusative of gṛha. Akrūra goes home alone. Gauḍīyas read the ache: he had invited Kṛṣṇa home (verses 11-12); now he goes home without Him. Vipralambha-bhakti's first measurement in this chapter.

Akrūra walks into Kaṁsa's court the way a witness walks into a courtroom whose verdict has already been pronounced. He delivers the report, then goes home alone — the chariot has emptied of its real cargo.