From the author's README on Thunderstore

Isaac Clarke Costume

A full-body Isaac Clarke costume for skate., running on ReSkate. Appears in Apparel > Costumes as “Isaac Clarke”.

Version 1.0.0

Full-body Isaac Clarke suit inspired by Dead Space.
Includes the helmet, suit, gloves, boots, back hardware, and front accessories.
Textures mapped in ReSkate Studio.
Prepared with Blender and ReSkate Studio.

Install

Copy the costume folder into Skate\Mods.
Start the game through the ReSkate launcher and enable the Isaac Clarke costume.
In game, open Apparel > Costumes and equip Isaac Clarke.

Notes

Fan-made costume for personal use.
Isaac Clarke and Dead Space belong to their respective rights holders. This costume is not affiliated with or endorsed by them or the skate. project.
Built with ReSkate Studio and Blender.

Install Isaac Clarke

You need ReSkate and your own copy of skate. on Steam.

Open ReSkateLauncher.exe and go to MODS.
Search for Isaac Clarke and click install. The launcher also installs anything it depends on.
Press PLAY. In game, the MODS tab of the ReSkate menu (Insert) turns it on and off.

Or install it by hand: download the .zip and drop it on the launcher window, or unzip it into its own folder in Mods\ beside Skate.exe.

Maps show up in the ReSkate menu's level list. To join a server running a custom map, you need the same map installed. If the game won't load after installing, see known issues.

skatemods doesn't host or review this mod. The download comes straight from Thunderstore. Only install mods you trust, because scripts can run code.