Here is the full list of all 20 Self-Delusion achievements worth 1,000 gamerscore.
Light 10 candles
Find 10 toys
Find 50 toys
Find 100 toys
Find 10 matches
Find 50 matches
Find 100 matches
Feed the Oven 10 times
Feed the Oven 50 times
Drive away Ancybal 5 times
Drive away Boggart 10 times
Meet Lapot
Pierce the heart of Likho
Meet Kolobok
Win against Kolobok
Run away from Leshy
Know the winner
The ending?
Get home
Get first lesson