Every weapon blueprint and skill blueprint in 0 cells, plus a weapon blueprint from 1 cell and one from 3 cells, i still did not beat giant without getting hit, so there might be a blueprint still missing behind that door)
War Javelin - Open wounds - The Boy's Axe - Shrapnel Axes - Giantkiller - Magic missiles - Great Owl of War - Flawless

by leftfornova