Achilleas Stergioulis
Developer | Game Designer
Rapid prototyping engineer and gameplay designer with deep expertise in game architecture, systems design, and production pipelines. Specialises in turning raw ideas into fully playable vertical slices fast, handling code, tools, UX, game feel, and design direction end-to-end. Experienced working across the full cycle from concept and prototyping through to shipping, with a strong focus on clean architecture that teams can actually extend.
Highly skilled in Godot, C#, and building data-driven systems, custom editors, and automation pipelines that accelerate iteration. Comfortable taking on technical leadership, mentoring junior teams, and establishing Git workflows, milestone planning, and review processes that keep production stable and predictable.
Services
How Achilleas can help
Code
Robust Godot architecture, gameplay systems, and tooling ready for direct handoff.
- Fully working core loops, mechanics, UI, and levels
- Clean, extensible architecture ready for future development
- Desktop, mobile, and Steam Deck
- Component-based architecture with clean data separation
- Tools and editors that empower your team and speed up iteration
- Scalable systems, polished gameplay feel, and reliable performance
Design
UI, UX, and narrative direction kept consistent with your studio’s voice.
- Clear gameplay vision, mechanics, and progression
- Tutorials that teach naturally
- Level and encounter design that reinforces player mastery
- Narrative design with environmental storytelling
Prototyping
Playable loops built in days so you can pitch, test, or iterate immediately.
- Perfect for pitching, testing, funding, or validating ideas
- Playable loops built in days so you can pitch, test, or iterate immediately
Core Capabilities
Where the work gets sharper
Code
Robust Godot architecture, gameplay systems, and tooling ready for direct handoff.
Design
UI, UX, and narrative direction kept consistent with your studio’s voice.
Prototyping
Playable loops built in days so you can pitch, test, or iterate immediately.
Systems
Data-driven mechanics, tools, and pipelines that scale with your project.
UX
Tutorials, onboarding, and moment-to-moment feel tuned for real players.
Pipeline Planning
Processes, milestones, and automation so production keeps moving forward.
Production Proof
Real work samples
Case Study 01
Problem
The project mixed logic, assets, and data in one tangled structure, causing delays and constant breakage.
Approach
I built a modular Game Database as the single source of truth and split all mechanics into independent components.
Result
- New features became easy and safe to build
- Contributors immediately understood the structure
- The project gained the stability needed for rapid prototyping
Case Study 02
Problem
The client had a vague high-level vision (“exploration, action, puzzle”). The team lacked structure, direction, and a testable plan.
Approach
I reframed the vision around real player problems and designed systems, obstacles, and a tutorial level that taught mechanics step-by-step.
Result
- The team finally had a playable prototype
- Testing led to fast iteration
- The design moved from wishful concepts to a concrete, buildable plan
Case Study 03
Problem
A junior-heavy team shipped bugs, broke main constantly, and had no plan, no review process, and no leadership.
Approach
I introduced Git workflows, task systems, training, milestone breakdowns, and role assignment based on developer strengths.
Result
- A stable workflow
- Predictable progress
- Dramatic reduction in errors
- A team that operated like an actual studio
Let's work together
Got a project in mind?
We help with art direction, UI readability, prototype scope, and the workflow problems slowing your game down.