en_tn/2ki/09/23.md

turned his chariot and fled

"turned his chariot around to try to flee"

treachery

trickery or deception

with his full strength

"with all of his strength" or "with all of his power"

he sank down in his chariot

Joram died from being shot with arrow. AT: "Joram fell down dead in his chariot" (See: rc://en/ta/man/translate/figs-explicit)