Obeyed the instructions and succeeded (8)
I believe the answer is:
followed
This clue might be a double definition.
'obeyed the instructions' is the first definition.
'followed' can be an answer for 'obeyed' (following is a kind of obeying). I'm not certain of the 'the instructions' bit.
'succeeded' is the second definition.
('follow' can be a synonym of 'succeed')
'and' acts as a link.
Can you help me to learn more?
(Other definitions for followed that I've seen before include "Pursued" , "Travelled behind or ensued" , "Came along behind" .)