Flynn: Son of Crimson

For the purposes of this achievement I turned on No Player Damage in the options>accessibility menu.

Map - Rustwood > Noxious Everglade

Head through into the second area and carry on progressing a short way. Swing across the rope and you will arrive at a red coloured boulder.

Pick up the boulder and carry on walking right to the zombie goo enemy.

Go and stand directly on top of the enemy then press DOWN on the left stick or D-PAD which will drop the boulder on the enemies head. It will bounce five times before killing the enemy... then popping the achievement.

You can do the Smash Crash Bash Achievement in Noxious everglade. Actually, you can do it anywhere, but you have to have a boulder and an enemy with enough health. You have 2 options: push the boulder in the enemy – the slimy guy has enough hp, the boulder bounces 5 times and the achievement pops. Or stand in front of him with the boulder – he will damage you and you will drop the boulder and it will bounce.

Visual representation at 13:44:


Timestamps:

00:00 Intro
00:52 Wow, Rude Achievement
01:07 Welcome to Rosantica Achievement
01:22 The Whirlwind Assassin Achievement
01:52 The Aquatic Voltknight Achievement
02:23 Rozia, Just Stop Achievement
02:34 The Toxic Marksman Achievement
03:09 The Shadow Sorceress
03:39 Zealock Achievement
04:31 Relics - Oooh, Shiny! Achievement, Yombal happy Achievement
11:18 Time for an upgrade Achievement, All Skilled Out Achievement
12:18 Finally.. I was about to give up Achievement
12:36 Tri-Hard AChievement
13:06 Crimson Combo (Plummet) Achievement
13:25 Crimson Combo (Air) Achievement
13:44 Smash, Crash, Bash! Achievement
14:20 Bo - Bo - Boing!! Achievement
14:39 Chain Reaction Achievement
14:55 Hey there, Bax! Achievement
15:40 Challenges - Challenges Challenged Achievement, 101% Complete Achievement