Hi there, Sasha! Well, the focus of the training will be on 3D, but Unreal most definitely supports 2D as well, and we could point you in the right direction during that week of pre-production. In fact, two of the major games in our previous jam were 2D, for example Sacrificial Lighthouse: https://store.steampowered.com/app/1468220/Sacrificial_Lighthouse
Also, we’ll be providing support in our Discord community as well – it’s a good place to ask about this: https://discord.gg/senscape