In the TAIGA level, following the natural story path you’ll come up to a church where you must take on The Master of the Forest (The bear)
Make sure you have a good look around for Molotov’s and arrows.
In the building close to the beginning where this achievement can be earned:
The Decommunization achievement in Metro Exodus worth 15 pointsDestroy the biggest statue in front of the children's camp on the TAIGA level.
Their are explosive arrows in the cellar and a crossbow with Night vision sight attachment on the top floor.
Two Molotov’s can be found in the cave just before entering the gate to the church. If you took the stealth route across the zip line you won’t miss this. If you did miss this route then it is directly opposite the gate where you can backtrack to find the cave.
Another 2 can be found in the church grounds and 1 can be found behind the rope you have to cut to continue.
With the Molotov’s and the explosive bows mixed with the standard bows. This can be done in under 2 minuets playing on NORMAL.
This is me beating the bear in under 2 minutes. Make sure to quick save before the start of the fight.