Metro: Last Light Redux
49 Achievements
25-30h
Big Momma
Kill the Rhino.
34.3%
How to unlock the Big Momma achievement in Metro: Last Light Redux - Definitive Guide
Check out the video below for a full playthrough of the game showing all collectibles, miscellaneous achievements like this one, and the Moral Points I obtained (I skipped a lot of them) in order to get the Redemption achievement. The Undercity mission starts at timestamp 1:19:50.
Story related, cannot be missed.
Towards the end of the “Undercity” level, you will need to kill the Rhino mutant in order to obtain this achievement. Once the fight with the Rhino begins, try to conserve your ammo and allow it to charge towards you. If you position yourself behind the stone pillars in the cave, it'll charge right into the pillar and damage itself. Repeat this on all the pillars in the room and eventually the Rhino will retreat into another cave. In this next cave area, repeat the same as before and the Rhino will eventually kill itself.
Story related, cannot be missed.
Towards the end of the “Undercity” level, you will need to kill the Rhino mutant in order to obtain this achievement. Once the fight with the Rhino begins, try to conserve your ammo and allow it to charge towards you. If you position yourself behind the stone pillars in the cave, it'll charge right into the pillar and damage itself. Repeat this on all the pillars in the room and eventually the Rhino will retreat into another cave. In this next cave area, repeat the same as before and the Rhino will eventually kill itself.
In the Chapter "UNDERCITY", there will be a large room with loads of stone pillars and a huge beast. Lure it into each of these obstacles and it will destroy them, thus weakening the room's structural integrity. After it has destroyed everything in the room, shoot it a few times and it will die.