ODIA (Grimdark Retro FPS where you play as the invading forces) longplay + 100% achievements
1EDIT: Link to video of the Military Base section that I missed out: https://youtu.be/NmPJEEnf97k
From Captain Bear (the developer of retro FPS metroidvania Anopek), this game is quite a challenge to complete with its slow paced and methodical combat. And it has some Dark Souls vibe.
You play as one of the many demonic grunts summoned by the fascist ODIA to conquer the kingdom of Gottheim. Armed with only a shield and an arcane magic gun, you set off to destroy the Shield Crystal that's protecting the inhabitants of Gottheim.
Some deaths are edited out for pacing.
Game: https://store.steampowered.com/app/1312250/ODIA/
0:00 Main Menu + Beach Checkpoint
4:32 Cliffside Checkpoint
7:04 Coastal Town Checkpoint
8:04 First Blood Rune
9:41 Fields
17:17 Fountain Checkpoint
18:53 Woods Checkpoint
20:14 Second Blood Rune
23:28 Train Station
25:48 Town Checkpoint
28:14 FELIS secret
28:37 Sewers
31:58 LATENS secret
34:56 Third Blood Rune + Cathedral
36:28 Cathedral Rooftops Checkpoint
36:57 VERITAS secret
39:59 Getting Closer To The Shield Crystal
41:57 Ending + Credits
Achievements:
1. APERTUM: Collect all 6 Wraithkeys (Random-drop by enemies. Easy to find)
2. ADMORDEO: Collect all 3 Blood Runes
3. EXCINDO: Destroy all 2 Guardian Walkers (Mech-like enemies. Found in Woods and Cathedral Rooftops)
4. MARTYRIS: Finish the game
5. FELIS: Find the cat picture located near the clocktower in the town
6. LATENS: Find the hidden message in the sewers
7. VERITAS: Find the hidden message in the cathedral