Hi there,
We'd to help you out!
Please check our showreel on our Awwwards-winning website: https://outstandly.com/gamedev/
and more pixel art work is here!: https://docs.google.com/presentation/d/116XfyBN0a5a2_FpOwK7NB38UZXA4GeEd-8ezCP_5RoQ/edit?slide=id.g358e532fe15_0_43#slide=id.g358e532fe15_0_43
For what you've described — 64-72px sprites, 4 directions (N/E/S/W), with idle/attack/walk/death anims for minions and heroes — my team can cover the full pipeline: design, sprite sheets, and animations. Per-sprite-sheet pricing works well for this kind of scope; the main cost drivers are frame counts per animation, hero vs minion complexity, and how much design work is needed vs working from your existing concepts.
Could you share the full character list (minions + heroes), any references or existing concepts you have, and the rough frame counts you're targeting per animation? Based on that, I'll be happy to calculate the production costs for ya.
Feel free to reach out to us through our website, and we can take it from there!