1. Act 4 Cleaner - Solo Achievement Guide by Absence
2. Recommended Cleaners:
Walker (+10 Damage and +10 Team Health)
Hoffman (+1 Offensive Inventory, +15 Max Team Ammo)
I obtained this achievement using Walker for additional damage and health due to AIs being inconsistent at times. This achievement relies a lot on RNG when attempting solo.
3. My solo Walker build:
01. Quick Kill: +50% Accuracy, DISABLES: Aim Down Sights
02. Hyper-Focused: +50% Weakspot Damage, -40% Move Speed Penalty while shooting or melee attacking.
03. Reckless Strategy: +30% Weakspot Damage, -5% Damage Resistance Penalty
04. Ridden Slayer: +20% Weakspot Damage
05. Knowledge Is Power: +10% Weakspot Damage
06. Killer's Instinct: +30% Weakspot Damage, DISABLES: Aim Down Sights
07. Hazmat Specialist: +35% Acid Resistance
08. Double Grenade Pouch: +2 Offensive Inventory
09. Grenade Pouch: +1 Offensive Inventory, +25% Swap Speed, -5% Offensive Accessory Cost Penalty
10. Grenade Training: +25% Accessory Damage
11. Mag Coupler: +50% Reload Speed, DISABLES: Aim Down Sights
12. Fire In The Hole!: +20 Temp Health and 25% Sprint Speed for 5 seconds when throwing an Offensive Accessory
13. Ammo Belt: +50% Ammo Capacity, +15% Reload Speed
14. Vitamins: +25% Health
15. Demolitions Expert: +50% Accessory Damage, -15% Ammo Capacity Penalty
4. Setup
We will be using a LMG for this, so grab either the RPK or the M249 on the ground. Secondary is personal preferences but I love the TEC-9.
Go to the shop and buy all the possible team upgrades, but the most important one for this run is Offensive Item Upgrade.
Buy pills for temporary health, a defibrilator and 2 pipe bombs.
Unlock the door and go up the stairs but do not go down just yet. You want to throw your two pipe bombs below you one by one to eliminate as many riddens as possible to make it easier for you.
Once you've thrown your pipe bombs, go back to the shop and buy a full stack of grenades. Go up the stairs and jump down. The tentacles will spawn when you advance further.
5. Tips
You want to use your grenades to get rid of all 4 tentacles as quick as possible. What you want to do is bait them one by one until they smash on the ground and throw a grenade in its mouth as it goes back up in the air. Repeat that for the other 3 tentacles.
Once you've got all four of them, it's very straight forward from there. Follow the game's objectives and be careful of your surroundings at all times.