Ensures tutorial is a shambles — that's a risky game! (7,8)

Here is my best explanation:

'a risky game' is the definition.

'ensures tutorial is a shambles' is the wordplay.
'is a shambles' indicates an anagram (letters rearranged chaotically).
'ensures'+'tutorial'='ensurestutorial'
'ensurestutorial' with letters rearranged gives 'RUSSIAN ROULETTE'.

'that's' is the link.