To download all objects using wget:

wget -r -H -N --cut-dirs=4 --include-directories="/v1/" "https://swiftbrowser.dkrz.de/public/dkrz_1e33ba3a-9ecb-452f-93b9-583cf4a66e57/ICON-HDCP2-DE/AlphaRelease/?show_all"

Name
Humidity_Profiles_Alpha
Humidity_Profiles_Cntrl
Temp_Profiles_Alpha
Temp_Profiles_Cntrl
WindSpd_Profiles_Alpha
WindSpd_Profiles_Cntrl
CloudNet_Own_ICONAlpha_LACROS_14082014_v110817.png
CloudNet_Own_ICONCntrl_LACROS_14082014_v110817.png
ICON_DOM3_ALPHA_RADOLAN_5min_precip_2014-08-14.mp4
ICON_clivi_dom03_20140814_alpha_release.mp4
ICON_clwvi_dom03_20140814_alpha_release.mp4
ICON_lhfl_s_dom03_20140814_alpha_release.mp4
ICON_prw_dom03_20140814_alpha_release.mp4
ICON_ps_dom03_20140814_alpha_release.mp4
ICON_shfl_s_dom03_20140814_alpha_release.mp4
ICON_z_pbl_dom03_20140814_alpha_release.mp4