NSFW puzzle game with an auto-complete button. Free DLC required. Finish all levels, then enter the gallery, choose any picture, set speed x2 (S key), and wait for 'Kenja Time'. ~10 minutes to 100%.

Puzzle game. Complete all levels without skipping, skip once, and launch the game between 1:00 a.m. and 1:59 a.m. ~10 minutes to 100%.

Asteroids clone. Free DLC req. Clear all levels, kill 888 enemies, get 9999 gold, buy all galleries, listen to 9 in-game tracks, pick all routes during VN scenes. Unlock on close. ~1.5 hours to 100%.

Easy match-3 game with 39 levels (free DLC required). Reach stage 25 in main game, stage 10 in DLC, and open the gallery for all achievements. ~1.2 hours to 100%.

Chinese-only kinetic novel. ~2 minutes to 100%.