Zerk

"Action roguelike. Fully guided. All DLCs needed, clear all difficulties and beat every boss hitless. Many misc tasks. ~20 hours with this method, 90+ hours without it to 100%."

"Great first-person dungeon crawler. Requires all spells, weapons and endings, all of which can be obtained in one playthrough. See full review for useful links. ~15 hours to 100%."

"Tetris-like puzzle game. Complete all Marathon and Spectrum modes, solve every puzzle, do a Marathon/Standard speedrun, and clear 15 lines at once. ~10+ hours to 100%."