Collider posted the Q & A with the creator and director of Secret Levels, Tim Miller and Dave Wilson, respectively, following a screening on youtube.
The segment pertaining to Keanu and his role in Armor Core episode is at the 22:00 – 25:49 mark.
They talk about how Keanu got the part, the fact he filmed for 13 hr straight with a broken knee cap with his leg in a brace and the fact he had a cold.