Defeating legacy D-60i | Rooms found footage renovated

why was this lowkey more harder then the current one? it got intense in the end. timestamps: 0:07 countdown begins 0:16 D-60i charges up 0:22 D-60i phase 1 15:36 D-60i charging to phase 2 15:45 D-60i phase 2 intro 16:05 D-60i phase 2 28:20 D-60i done