Just like Housemarque’s previous title, SAROS has a secret alternate ending, considered to be its ‘true’ ending. Unlocking it is not complicated in the slightest, but there are some important points to bear in mind.
This SAROS guide is everything you need to know about getting the best ending to the game.
Initial Story Completion
You will have to complete the game just once, with no other requirements with regards to Cycle completion or perfection. Simply wrap up the final biome, Yellow Shore, and its final enemy, and watch the ending followed by the credits.
Post-Ending Continuation
Once you find yourself back in the Passage, you will be explicitly directed to various objectives and watch multiple cutscenes. Next, proceed to make your way through the Yellow Shore to face the enemy yet again.
Battle the enemy right up until you have to strike the deathblow.
At this point, you will be presented with the choice of taking him down outright or letting him live. The former option just rehashes the first ending all over again.
Instead, ignore the enemy and walk into the portal in order to see the second, or true ending to the game.
That is everything there is to know about unlocking the alternate ending to SAROS.
