The Incredible Adventures of Van Helsing III

From the game's main menu, select single player or multiplayer, then "Scenario" as game type.

Be sure the game's difficulty is "Fearless". You can choose the difficulty while setting up the set of scenarios, or by pressing anytime while you are in the set of scenarios itself to do a set "reroll".

The Powerup is a skill's upgrade that, well... power's up the skill itself with various effects such more damage or inflicting vulnerabilities to enemies.

You use powerups by pressing , or to activate the corresponding powerup and spending Rage Points, or to activate the 3 powerups at the same time. See image below


This achievement requires you to complete a scenario WITHOUT using any Powerups.

There isn't a scenario type that works better than others, so it's completely up to your playstyle. If you built a character heavily depending on Powerups damage, I'd personally suggest to avoid scenarios with time limits or domovoy escape (domovoy on fearless can be quite annoying to kill, due to the upgraded hit points, and they escape through portals more easily).

Once you successfully completed a scenario without using any powerups, the achievement will unlock.

WARNING!

1. Some people reported this achievement as "bugged": it didn't unlock even after meeting the described requirements, unlocking later in the game while playing another scenario, or unlocking while meeting the requirements for another scenario achievement, such as


2. EDIT: should your achievement bug out, try the following:
2.1. respec your character and keep only basic skills (0 powerups)
2.2. run a treasure hunt map without killing anything (thanks to Lvl 1 Cactuar and DEN EDDY for pointing this out in the comments)

3: EDIT: please, do not downvote without telling me what is wrong in the solution. It doesn't help anyone :)

4. If you are going for the "Monster Hunter Extraordinaire" achievement on your first playthrough

I strongly suggest to AVOID playing scenarios until you actually completed the main storyline on Fearless difficulty. The "Monster Hunter Extraordinaire" is known to be buggy in various ways and trying to complete the scenarios' achievements may void the MHE unlock.

Hey everyone, Eezore here, and with this video I show you how to get this achievement. This is a tricky one to get if you don't know what your doing. The biggest thing to note: Powerups is the Rage mechanic. So if you don't use any rage mechanics, you'll get this no problem. The only other thing you need to do is play on fearless, and you'll get it. Hope the video helps!